Chore: used old implementation for web since the new one does not work as expected

Author: CatHood0

lib/src/editor/raw_editor/input/ime/on_non_update_text.dart

@@ -6,8 +6,6 @@ Future<void> onNonTextUpdate(
   TextEditingDeltaNonTextUpdate nonTextUpdate,
   QuillController controller,
 ) async {
-  // update the selection on Windows
-  //
   // when typing characters with CJK IME on Windows, a non-text update is sent
   // with the selection range.
   if (Platform.isWindows) {

lib/src/editor/raw_editor/input/raw_editor_state_input_client_mixin.dart

@@ -6,6 +6,8 @@ import 'package:flutter/foundation.dart' show ValueNotifier, kIsWeb;
 import 'package:flutter/material.dart' show Theme;
 import 'package:flutter/scheduler.dart' show SchedulerBinding;
 import 'package:flutter/services.dart';
+import '../../../delta/delta_diff.dart';
+import '../../../document/document.dart';
 import '../raw_editor.dart';
 import 'diff_services.dart';
 import 'formatters/text_editing_delta_formatters.dart';
@@ -222,6 +224,28 @@ mixin RawEditorStateTextInputClientMixin on EditorState
       return;
     }
 
+    if (kIsWeb) {
+      final effectiveLastKnownValue = _lastKnownRemoteTextEditingValue!;
+      _lastKnownRemoteTextEditingValue = value;
+      final oldText = effectiveLastKnownValue.text;
+      final text = value.text;
+      final cursorPosition = value.isComposingRangeValid
+          ? value.composing.end
+          : value.selection.extentOffset;
+      final diff = getDiff(oldText, text, cursorPosition);
+      if (diff.deleted.isEmpty && diff.inserted.isEmpty) {
+        widget.controller.updateSelection(value.selection, ChangeSource.local);
+      } else {
+        widget.controller.replaceText(
+          diff.start,
+          diff.deleted.length,
+          diff.inserted,
+          value.selection,
+        );
+      }
+      return;
+    }
+
     final textEditingDlta = getTextEditingDelta(currentTextEditingValue, value);
     _lastKnownRemoteTextEditingValue = value;
     _apply([textEditingDlta]);