TF-1961 Add script handle lazy loading image in html

(cherry picked from commit b57c93f47dc7c621e24506818d44b6360a9b9239)

core/lib/presentation/views/html_viewer/html_content_viewer_on_web_widget.dart

@@ -4,6 +4,7 @@ import 'dart:math' as math;
 
 import 'package:core/presentation/extensions/color_extension.dart';
 import 'package:core/presentation/utils/html_transformer/html_template.dart';
+import 'package:core/presentation/utils/html_transformer/html_utils.dart';
 import 'package:core/presentation/views/html_viewer/html_viewer_controller_for_web.dart';
 import 'package:core/utils/app_logger.dart';
 import 'package:flutter/cupertino.dart';
@@ -171,7 +172,7 @@ class _HtmlContentViewerOnWebState extends State<HtmlContentViewerOnWeb> {
       minHeight: minHeight,
       minWidth: minWidth,
       styleCSS: tooltipLinkCss,
-      javaScripts: webViewActionScripts + scriptsDisableZoom,
+      javaScripts: webViewActionScripts + scriptsDisableZoom + HtmlUtils.scriptLazyLoadImage,
       direction: widget.direction);
 
     return htmlTemplate;

core/lib/presentation/views/html_viewer/html_content_viewer_widget.dart

@@ -65,7 +65,11 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
   void initState() {
     super.initState();
     actualHeight = widget.heightContent;
-    _htmlData = generateHtml(widget.contentHtml, direction: widget.direction);
+    _htmlData = generateHtml(
+      widget.contentHtml,
+      direction: widget.direction,
+      javaScripts: HtmlUtils.scriptLazyLoadImage,
+    );
   }
 
   @override
@@ -76,7 +80,8 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
         widget.direction != oldWidget.direction) {
       _htmlData = generateHtml(
         widget.contentHtml,
-        direction: widget.direction
+        direction: widget.direction,
+        javaScripts: HtmlUtils.scriptLazyLoadImage,
       );
     }
   }
@@ -176,8 +181,6 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
         actualHeight = minHeight;
       }
     }
-
-    return Future.value(null);
   }
 
   Future<void> _setActualWidthView() async {
@@ -210,8 +213,6 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
         widget.onWebViewLoaded?.call(isScrollActivated);
       }
     }
-
-    return Future.value(null);
   }
 
   void _hideLoadingProgress() {