TF-2237 Add loading circular for send button

(cherry picked from commit d9db8f467942f16b70140113e222985b61db047a)

core/lib/presentation/views/button/tmail_button_widget.dart

@@ -37,6 +37,7 @@ class TMailButtonWidget extends StatelessWidget {
   final TextDirection iconAlignment;
   final int? maxLines;
   final MainAxisSize mainAxisSize;
+  final bool? isLoading;
 
   const TMailButtonWidget({
     super.key,
@@ -68,6 +69,7 @@ class TMailButtonWidget extends StatelessWidget {
     this.iconAlignment = TextDirection.ltr,
     this.maxLines,
     this.mainAxisSize = MainAxisSize.max,
+    this.isLoading = false,
   });
 
   factory TMailButtonWidget.fromIcon({
@@ -287,13 +289,23 @@ class TMailButtonWidget extends StatelessWidget {
                   softWrap: maxLines == 1 ? CommonTextStyle.defaultSoftWrap : null,
                 ),
               SizedBox(width: iconSpace),
-              SvgPicture.asset(
-                icon!,
-                width: iconSize,
-                height: iconSize,
-                fit: BoxFit.fill,
-                colorFilter: iconColor?.asFilter()
-              ),
+              if (!isLoading!)
+                SvgPicture.asset(
+                  icon!,
+                  width: iconSize,
+                  height: iconSize,
+                  fit: BoxFit.fill,
+                  colorFilter: iconColor?.asFilter()
+                )
+              else 
+                SizedBox(
+                  width: iconSize,
+                  height: iconSize,
+                  child: const CircularProgressIndicator(
+                    color: Colors.white,
+                    strokeWidth: 2,
+                  )
+                ),
             ]
           );
         }

lib/features/composer/presentation/composer_view_web.dart

@@ -435,6 +435,7 @@ class ComposerView extends GetWidget<ComposerController> {
                   radius: ComposerStyle.popupMenuRadius
                 );
               },
+              isSending: controller.isSendEmailLoading.value,
             )),
           ]);
         },

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

@@ -19,6 +19,7 @@ class BottomBarComposerWidget extends StatelessWidget {
   final VoidCallback saveToDraftAction;
   final VoidCallback sendMessageAction;
   final OnRequestReadReceiptAction? requestReadReceiptAction;
+  final bool? isSending;
 
   final _imagePaths = Get.find<ImagePaths>();
 
@@ -34,6 +35,7 @@ class BottomBarComposerWidget extends StatelessWidget {
     required this.saveToDraftAction,
     required this.sendMessageAction,
     this.requestReadReceiptAction,
+    this.isSending,
   });
 
   @override
@@ -126,7 +128,7 @@ class BottomBarComposerWidget extends StatelessWidget {
           ),
           const SizedBox(width: BottomBarComposerWidgetStyle.sendButtonSpace),
           TMailButtonWidget(
-            text: AppLocalizations.of(context).send,
+            text: isSending! ? AppLocalizations.of(context).sending : AppLocalizations.of(context).send,
             icon: _imagePaths.icSend,
             iconAlignment: TextDirection.rtl,
             padding: BottomBarComposerWidgetStyle.sendButtonPadding,
@@ -136,6 +138,7 @@ class BottomBarComposerWidget extends StatelessWidget {
             backgroundColor: BottomBarComposerWidgetStyle.sendButtonBackgroundColor,
             borderRadius: BottomBarComposerWidgetStyle.sendButtonRadius,
             onTapActionCallback: sendMessageAction,
+            isLoading: isSending,
           )
         ]
       ),