TF-3985 Navigate Paywall url when click Increase your space button

lib/features/mailbox_dashboard/presentation/extensions/validate_saas_premium_available_extension.dart

@@ -1,5 +1,11 @@
+import 'package:flutter/material.dart';
 import 'package:tmail_ui_user/features/home/domain/extensions/session_extensions.dart';
 import 'package:tmail_ui_user/features/mailbox_dashboard/presentation/controller/mailbox_dashboard_controller.dart';
+import 'package:tmail_ui_user/features/paywall/domain/model/paywall_url_pattern.dart';
+import 'package:tmail_ui_user/features/paywall/domain/usecases/get_paywall_url_interactor.dart';
+import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+import 'package:tmail_ui_user/main/routes/route_navigation.dart';
+import 'package:tmail_ui_user/main/utils/app_utils.dart';
 
 extension ValidateSaasPremiumAvailableExtension on MailboxDashBoardController {
   bool get isPremiumAvailable {
@@ -13,4 +19,35 @@ extension ValidateSaasPremiumAvailableExtension on MailboxDashBoardController {
 
     return saasAccount?.isPremiumAvailable ?? false;
   }
+
+  void loadPaywallUrl() {
+    final getPaywallUrlInteractor = getBinding<GetPaywallUrlInteractor>();
+    final jmapUrl = dynamicUrlInterceptors.jmapUrl;
+
+    if (getPaywallUrlInteractor != null && jmapUrl != null) {
+      consumeState(getPaywallUrlInteractor.execute(jmapUrl));
+    } else {
+      paywallUrlPattern = null;
+    }
+  }
+
+  void loadPaywallUrlSuccess(PaywallUrlPattern newPattern) {
+    paywallUrlPattern = newPattern;
+  }
+
+  void navigateToPaywall(BuildContext context) {
+    if (paywallUrlPattern == null) {
+      appToast.showToastErrorMessage(
+        context,
+        AppLocalizations.of(context).paywallUrlNotAvailable,
+      );
+      return;
+    }
+
+    final qualifiedPaywall = paywallUrlPattern!.getQualifiedUrl(
+      ownerEmail: ownEmailAddress.value,
+    );
+
+    AppUtils.launchLink(qualifiedPaywall);
+  }
 }