fix: Should not clear input when showSearch is false

fix ant-design/ant-design#20421

Author: zombieJ

examples/single.tsx

@@ -65,7 +65,7 @@ class Test extends React.Component {
             id="my-select"
             value={value}
             placeholder="placeholder"
-            showSearch
+            showSearch={false}
             style={{ width: 500 }}
             onBlur={this.onBlur}
             onFocus={this.onFocus}

src/Selector/Input.tsx

@@ -14,12 +14,21 @@ interface InputProps {
   open: boolean;
   tabIndex: number;
 
-  onKeyDown: React.KeyboardEventHandler<HTMLInputElement | HTMLTextAreaElement | HTMLElement>;
-  onMouseDown: React.MouseEventHandler<HTMLInputElement | HTMLTextAreaElement | HTMLElement>;
-  onChange: React.ChangeEventHandler<HTMLInputElement | HTMLTextAreaElement | HTMLElement>;
+  onKeyDown: React.KeyboardEventHandler<
+    HTMLInputElement | HTMLTextAreaElement | HTMLElement
+  >;
+  onMouseDown: React.MouseEventHandler<
+    HTMLInputElement | HTMLTextAreaElement | HTMLElement
+  >;
+  onChange: React.ChangeEventHandler<
+    HTMLInputElement | HTMLTextAreaElement | HTMLElement
+  >;
 }
 
-function fillRef(node: InputRef, ref: React.LegacyRef<InputRef> | React.Ref<InputRef>) {
+function fillRef(
+  node: InputRef,
+  ref: React.LegacyRef<InputRef> | React.Ref<InputRef>,
+) {
   if (typeof ref === 'function') {
     ref(node);
   } else if (ref && typeof ref === 'object') {
@@ -79,6 +88,7 @@ const Input: React.RefForwardingComponent<InputRef, InputProps> = (
     'aria-controls': `${id}_list`,
     'aria-activedescendant': `${id}_list_${accessibilityIndex}`,
     value: editable ? value : '',
+    readOnly: !editable,
     onKeyDown: (event: React.KeyboardEvent<HTMLElement>) => {
       onKeyDown(event);
       if (onOriginKeyDown) {

tests/__snapshots__/Multiple.test.tsx.snap

@@ -20,6 +20,7 @@ exports[`Select.Multiple render not display maxTagPlaceholder if maxTagCount not
         autocomplete="off"
         class="rc-select-selection-search-input"
         id="rc_select_TEST_OR_SSR"
+        readonly=""
         role="combobox"
         style="opacity: 0;"
         value=""
@@ -111,6 +112,7 @@ exports[`Select.Multiple render truncates tags by maxTagCount and show maxTagPla
         autocomplete="off"
         class="rc-select-selection-search-input"
         id="rc_select_TEST_OR_SSR"
+        readonly=""
         role="combobox"
         style="opacity: 0;"
         value=""
@@ -199,6 +201,7 @@ exports[`Select.Multiple render truncates tags by maxTagCount and show maxTagPla
         autocomplete="off"
         class="rc-select-selection-search-input"
         id="rc_select_TEST_OR_SSR"
+        readonly=""
         role="combobox"
         style="opacity: 0;"
         value=""
@@ -276,6 +279,7 @@ exports[`Select.Multiple render truncates values by maxTagTextLength 1`] = `
         autocomplete="off"
         class="rc-select-selection-search-input"
         id="rc_select_TEST_OR_SSR"
+        readonly=""
         role="combobox"
         style="opacity: 0;"
         value=""

tests/__snapshots__/Select.test.tsx.snap

@@ -19,6 +19,7 @@ exports[`Select.Basic does not filter when filterOption value is false 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="rc-select-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -191,6 +192,7 @@ exports[`Select.Basic no search 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="rc-select-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -235,6 +237,7 @@ exports[`Select.Basic render renders aria-attributes correctly 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="antd-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -289,6 +292,7 @@ exports[`Select.Basic render renders correctly 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="antd-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -345,6 +349,7 @@ exports[`Select.Basic render renders data-attributes correctly 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="antd-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -400,6 +405,7 @@ exports[`Select.Basic render renders disabled select correctly 1`] = `
         autocomplete="off"
         class="antd-selection-search-input"
         disabled=""
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -617,6 +623,7 @@ exports[`Select.Basic render renders role prop correctly 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="antd-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -672,6 +679,7 @@ exports[`Select.Basic should contain falsy children 1`] = `
         aria-owns="undefined_list"
         autocomplete="off"
         class="rc-select-selection-search-input"
+        readonly=""
         role="combobox"
         style="opacity:0"
         value=""
@@ -799,6 +807,7 @@ exports[`Select.Basic should render custom dropdown correctly 1`] = `
         autocomplete="off"
         class="rc-select-selection-search-input"
         id="rc_select_TEST_OR_SSR"
+        readonly=""
         role="combobox"
         style="opacity: 0;"
         value=""