hotfix(ai-scribe): fix Safari keyboard input issue in AI Scribe search bar dialog

lib/features/composer/presentation/extensions/ai_scribe/handle_ai_scribe_in_composer_extension.dart

@@ -101,6 +101,9 @@ extension HandleAiScribeInComposerExtension on ComposerController {
   }
 
   Future<void> openAIAssistantModal(Offset? position, Size? size) async {
+    clearFocusRecipients();
+    clearFocusSubject();
+
     final fullText = await _getTextOnlyContentInEditor();
 
     await AiScribeModalManager.showAIScribeMenuModal(

lib/features/composer/presentation/widgets/ai_scribe/composer_ai_scribe_selection_overlay.dart

@@ -24,7 +24,13 @@ class ComposerAiScribeSelectionOverlay extends StatelessWidget {
         imagePaths: controller.imagePaths,
         onSelectAiScribeSuggestionAction:
             controller.handleAiScribeSuggestionAction,
+        onTapFallback: _clearComposerInputFocus,
       );
     });
   }
+
+  void _clearComposerInputFocus() {
+    controller.clearFocusRecipients();
+    controller.clearFocusSubject();
+  }
 }