fix(ios): avoid incorrectly updating caret position (#50680)

Summary:
Avoid incorrectly updating caret position

Pull Request resolved: #50641

The caret position is updated incorrectly when a user is first typing if an zero-length selection is set.

## Changelog:
[IOS] [CHANGED] - Typing into TextInput now will not cause the caret position to update to the beginning when a zero-length selection is set.

Pull Request resolved: #50680

Test Plan:
Tested with the following code(a simplified version from the code in #50641)
```js
const [selection, setSelection] = useState({start: -1, end: -1});
const onSelectionChange = (
      evt: NativeSyntheticEvent<TextInputSelectionChangeEventData>,
    ) => {
      const {selection} = evt.nativeEvent;
      const {start, end} = selection;
      console.log('selection change: ', start, end);
      setSelection(selection);
};
return (
  <View style={{ position: 'absolute', top: 50, left: 30 }}>
    <TextInput
      placeholder="test"
      selection={selection}
      onSelectionChange={onSelectionChange}
    />
  </View>
);
```
When using the main branch, the caret position will jump back to the beginning after the first typing.
It works fine after applying this commit.

Reviewed By: fabriziocucci

Differential Revision: D72957245

Pulled By: cipolleschi

fbshipit-source-id: 3586797332b35e86b17f386a35e7d192ff758f7e

Author: ouchuan

packages/react-native/React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputComponentView.mm

@@ -702,6 +702,11 @@ - (void)_updateState
 }
 
 - (void)_restoreTextSelection
+{
+  [self _restoreTextSelectionAndIgnoreCaretChange:NO];
+}
+
+- (void)_restoreTextSelectionAndIgnoreCaretChange:(BOOL)ignore
 {
   const auto &selection = static_cast<const TextInputProps &>(*_props).selection;
   if (!selection.has_value()) {
@@ -711,6 +716,9 @@ - (void)_restoreTextSelection
                                                    offset:selection->start];
   auto end = [_backedTextInputView positionFromPosition:_backedTextInputView.beginningOfDocument offset:selection->end];
   auto range = [_backedTextInputView textRangeFromPosition:start toPosition:end];
+  if (ignore && range.empty) {
+    return;
+  }
   [_backedTextInputView setSelectedTextRange:range notifyDelegate:YES];
 }
 
@@ -736,7 +744,9 @@ - (void)_setAttributedString:(NSAttributedString *)attributedString
                               notifyDelegate:YES];
   [_backedTextInputView scrollRangeToVisible:NSMakeRange(offsetStart, 0)];
 
-  [self _restoreTextSelection];
+  // A zero-length selection range can cause the caret position to change on iOS,
+  // and we have already updated the caret position, so we can safely ignore caret changing in this place.
+  [self _restoreTextSelectionAndIgnoreCaretChange:YES];
   [self _updateTypingAttributes];
   _lastStringStateWasUpdatedWith = attributedString;
 }