don't process too early, just don't set the function prop to true if we have a process function

Author: hannojg

packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js

@@ -294,23 +294,15 @@ function diffProperties(
     prevProp = prevProps[propKey];
     nextProp = nextProps[propKey];
 
-    if (typeof nextProp === 'function') {
-      if (typeof attributeConfig === 'object') {
-        // When the config for a function prop has a custom process method
-        // we don't assume its a regular event handler, but use the process method:
-        nextProp = attributeConfig.process(nextProp);
-        if (typeof prevProp === 'function') {
-          prevProp = attributeConfig.process(prevProp);
-        }
-      } else {
-        // functions are converted to booleans as markers that the associated
-        // events should be sent from native.
-        nextProp = (true: any);
-        // If nextProp is not a function, then don't bother changing prevProp
-        // since nextProp will win and go into the updatePayload regardless.
-        if (typeof prevProp === 'function') {
-          prevProp = (true: any);
-        }
+    const attributeConfigHasProcess = typeof attributeConfig === 'object' && typeof attributeConfig.process === 'function';
+    if (typeof nextProp === 'function' && !attributeConfigHasProcess) {
+      // functions are converted to booleans as markers that the associated
+      // events should be sent from native.
+      nextProp = (true: any);
+      // If nextProp is not a function, then don't bother changing prevProp
+      // since nextProp will win and go into the updatePayload regardless.
+      if (typeof prevProp === 'function') {
+        prevProp = (true: any);
       }
     }