Switching checked to null should leave the current value (#26667)

I accidentally made a behavior change in the refactor. It turns out that
when switching off `checked` to an uncontrolled component, we used to
revert to the concept of "initialChecked" which used to be stored on
state.

When there's a diff to this computed prop and the value of props.checked
is null, then we end up in a case where it sets `checked` to
`initialChecked`:

https://github.com/facebook/react/blob/5cbe6258bc436b1683080a6d978c27849f1d9a22/packages/react-dom-bindings/src/client/ReactDOMInput.js#L69

Since we never changed `initialChecked` and it's not relevant if
non-null `checked` changes value, the only way this "change" could
trigger was if we move from having `checked` to having null.

This wasn't really consistent with how `value` works, where we instead
leave the current value in place regardless. So this is a "bug fix" that
changes `checked` to be consistent with `value` and just leave the
current value in place. This case should already have a warning in it
regardless since it's going from controlled to uncontrolled.

Related to that, there was also another issue observed in
#26596 (comment) and
#26588

We need to atomically apply mutations on radio buttons. I fixed this by
setting the name to empty before doing mutations to value/checked/type
in updateInput, and then set the name to whatever it should be. Setting
the name is what ends up atomically applying the changes.

---------

Co-authored-by: Sophie Alpert <git@sophiebits.com>

DiffTrain build for commit 1f248bd.

Author: sebmarkbage

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js

@@ -23745,7 +23745,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-next-b90e8ebaa-20230419";
+var ReactVersion = "18.3.0-next-1f248bdd7-20230419";
 
 // Might add PROFILE later.
 

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js

@@ -8587,7 +8587,7 @@ var devToolsConfig$jscomp$inline_1023 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-next-b90e8ebaa-20230419",
+  version: "18.3.0-next-1f248bdd7-20230419",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1206 = {
@@ -8618,7 +8618,7 @@ var internals$jscomp$inline_1206 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-next-b90e8ebaa-20230419"
+  reconcilerVersion: "18.3.0-next-1f248bdd7-20230419"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1207 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js

@@ -9013,7 +9013,7 @@ var devToolsConfig$jscomp$inline_1065 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-next-b90e8ebaa-20230419",
+  version: "18.3.0-next-1f248bdd7-20230419",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1247 = {
@@ -9044,7 +9044,7 @@ var internals$jscomp$inline_1247 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-next-b90e8ebaa-20230419"
+  reconcilerVersion: "18.3.0-next-1f248bdd7-20230419"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1248 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js

@@ -27,7 +27,7 @@ if (
 }
           "use strict";
 
-var ReactVersion = "18.3.0-next-b90e8ebaa-20230419";
+var ReactVersion = "18.3.0-next-1f248bdd7-20230419";
 
 // ATTENTION
 // When adding new symbols to this file,

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js

@@ -639,4 +639,4 @@ exports.useSyncExternalStore = function (
   );
 };
 exports.useTransition = useTransition;
-exports.version = "18.3.0-next-b90e8ebaa-20230419";
+exports.version = "18.3.0-next-1f248bdd7-20230419";

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js

@@ -642,7 +642,7 @@ exports.useSyncExternalStore = function (
   );
 };
 exports.useTransition = useTransition;
-exports.version = "18.3.0-next-b90e8ebaa-20230419";
+exports.version = "18.3.0-next-1f248bdd7-20230419";
 
           /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
 if (

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION

@@ -1 +1 @@
-b90e8ebaa5b692bcee4198eacb56f9123b62dd10
+1f248bdd7199979b050e4040ceecfe72dd977fd1

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js

@@ -27052,7 +27052,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-next-b90e8ebaa-20230419";
+var ReactVersion = "18.3.0-next-1f248bdd7-20230419";
 
 function createPortal$1(
   children,

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-prod.fb.js

@@ -9456,7 +9456,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1047 = {
     findFiberByHostInstance: getInstanceFromNode,
     bundleType: 0,
-    version: "18.3.0-next-b90e8ebaa-20230419",
+    version: "18.3.0-next-1f248bdd7-20230419",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForViewTag: function () {
@@ -9498,7 +9498,7 @@ var internals$jscomp$inline_1276 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-next-b90e8ebaa-20230419"
+  reconcilerVersion: "18.3.0-next-1f248bdd7-20230419"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1277 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-profiling.fb.js

@@ -10165,7 +10165,7 @@ var roots = new Map(),
   devToolsConfig$jscomp$inline_1125 = {
     findFiberByHostInstance: getInstanceFromNode,
     bundleType: 0,
-    version: "18.3.0-next-b90e8ebaa-20230419",
+    version: "18.3.0-next-1f248bdd7-20230419",
     rendererPackageName: "react-native-renderer",
     rendererConfig: {
       getInspectorDataForViewTag: function () {
@@ -10220,7 +10220,7 @@ var roots = new Map(),
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-next-b90e8ebaa-20230419"
+  reconcilerVersion: "18.3.0-next-1f248bdd7-20230419"
 });
 exports.createPortal = function (children, containerTag) {
   return createPortal$1(