Fix selection coordinates in mobile

Because the HTML editor is different, we need a different selector to get the editable element.

We also need to add a small offset to the coordinates to avoid positionning the overlay icon above native selection UI in mobile. For example, Android adds a marker at the beginning and the end of the selection and we do not want to display the Scribe overlay icon above this marker.

lib/features/composer/presentation/widgets/mobile/mobile_editor_widget.dart

@@ -66,7 +66,7 @@ class _MobileEditorState extends State<MobileEditorWidget> with TextSelectionMix
     _editorController = editorApi.webViewController;
 
     registerSelectionChange =
-        HtmlUtils.registerSelectionChangeListener(_createdViewId);
+        HtmlUtils.registerSelectionChangeListener(_createdViewId, isWebPlatform: PlatformInfo.isWeb);
 
     _editorController?.addJavaScriptHandler(
       handlerName: registerSelectionChange!.name,

lib/features/composer/presentation/widgets/web/web_editor_widget.dart

@@ -4,6 +4,7 @@ import 'package:collection/collection.dart';
 import 'package:core/utils/app_logger.dart';
 import 'package:core/utils/html/html_template.dart';
 import 'package:core/utils/html/html_utils.dart';
+import 'package:core/utils/platform_info.dart';
 import 'package:flutter/material.dart';
 import 'package:html_editor_enhanced/html_editor.dart';
 import 'package:tmail_ui_user/features/composer/presentation/mixin/text_selection_mixin.dart';
@@ -104,7 +105,7 @@ class _WebEditorState extends State<WebEditorWidget> with TextSelectionMixin {
     _editorController = widget.editorController;
 
     final registerSelectionChange =
-      HtmlUtils.registerSelectionChangeListener(_createdViewId);
+      HtmlUtils.registerSelectionChangeListener(_createdViewId, isWebPlatform: PlatformInfo.isWeb);
     _selectionChangeScript = WebScript(
       name: registerSelectionChange.name,
       script: registerSelectionChange.script,
@@ -224,7 +225,7 @@ class _WebEditorState extends State<WebEditorWidget> with TextSelectionMixin {
             _editorController.evaluateJavascriptWeb(
               HtmlUtils.registerDropListener.name);
             _editorController.evaluateJavascriptWeb(
-              HtmlUtils.registerSelectionChangeListener(_createdViewId).name);
+              _selectionChangeScript.name);
             _editorListenerRegistered = true;
           }
         },