fix: replace unique key with global key to avoid losing focus on post…

… details reply bottom textfield (#492)

## Description
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## Additional Notes
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## Type of Change
- [x] Bug fix
- [ ] New feature
- [ ] Breaking change
- [ ] Refactoring
- [ ] Documentation
- [ ] Chore

## Screenshots (if applicable)
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lib/app/features/feed/create_post/views/components/reply_input_field/reply_input_field.dart

@@ -36,7 +36,7 @@ class ReplyInputField extends HookConsumerWidget {
   Widget build(BuildContext context, WidgetRef ref) {
     final textEditorController = useQuillController();
 
-    final inputContainerKey = useRef(UniqueKey());
+    final inputContainerKey = useRef(GlobalKey());
     final focusNode = useFocusNode();
     final hasFocus = useNodeFocused(focusNode);
     final attachedMediaNotifier = useState(<MediaFile>[]);