TF-2387 Handle system back button on login view mobile

lib/features/login/presentation/login_view.dart

@@ -26,7 +26,12 @@ class LoginView extends BaseLoginView {
   Widget build(BuildContext context) {
     ThemeUtils.setSystemDarkUIStyle();
 
-    return Scaffold(
+    return PopScope(
+      canPop: false,
+      onPopInvoked: (didPop) => !didPop
+        ? controller.handleBackButtonAction(context)
+        : null,
+      child: Scaffold(
         backgroundColor: AppColor.primaryLightColor,
         body: GestureDetector(
           onTap: () => FocusScope.of(context).unfocus(),
@@ -63,7 +68,8 @@ class LoginView extends BaseLoginView {
                     ]),
             ),
           ),
-      ));
+        )),
+    );
   }
 
   Widget _buildCenterForm(BuildContext context) {