Add presentation layer for GetEmailContent

lib/features/mailbox/presentation/widgets/storage_widget_builder.dart

@@ -17,7 +17,7 @@ class StorageWidgetBuilder {
       padding: EdgeInsets.only(left: 40, top: 16, bottom: 20, right: 40),
       color: AppColor.storageBackgroundColor,
       alignment: Alignment.bottomLeft,
-      height: 112,
+      height: 100,
       child: Column(
         mainAxisAlignment: MainAxisAlignment.start,
         crossAxisAlignment: CrossAxisAlignment.start,

lib/features/mailbox/presentation/widgets/user_information_widget_builder.dart

@@ -33,7 +33,10 @@ class UserInformationWidgetBuilder {
             _onOpenUserInformationActionClick!();
           }
         },
-        leading: SvgPicture.asset(_imagePaths.icTMailLogo, width: 40, height: 40, fit: BoxFit.fill),
+        leading: AvatarBuilder()
+          .text('J')
+          .size(40)
+          .build(),
         title: Transform(
           transform: Matrix4.translationValues(0.0, 0.0, 0.0),
           child: Text(