Refactor tenders pagination and enhance API integration

- Updated TendersRepository and TendersService to support cursor-based pagination.
- Modified TendersViewModel to manage pagination state and handle API responses more effectively.
- Replaced existing pagination UI components with a new WindowedPagination widget across desktop, mobile, and tablet views.
- Improved notification handling in the UI to reflect the presence of notifications dynamically.
- Adjusted main tenders slider to ensure proper rendering based on the current page index.

lib/views/notification/pages/m_notification_page.dart

@@ -101,29 +101,40 @@ class _MobileNotificationPageState extends State<MobileNotificationPage>
             padding: EdgeInsetsDirectional.only(end: 24.0.w()),
             child: Align(
               alignment: Alignment.centerRight,
-              child: InkWell(
-                onTap: () {
-                  viewModel.markAllAsRead(context);
-                },
-                borderRadius: BorderRadius.circular(99),
-                child: Container(
-                  width: 132.0.w(),
-                  height: 32.0.h(),
-                  decoration: BoxDecoration(
-                    color: AppColors.primary20,
+              child: Builder(
+                builder: (context) {
+                  final hasNotifications =
+                      (viewModel.allNotificationResponse?.data?.isNotEmpty ??
+                          false);
+                  return InkWell(
+                    onTap: hasNotifications
+                        ? () => viewModel.markAllAsRead(context)
+                        : null,
                     borderRadius: BorderRadius.circular(99),
-                  ),
-                  child: Center(
-                    child: Text(
-                      NotificationStrings.markAllAsReadButton,
-                      style: TextStyle(
-                        fontSize: 14.0.sp(),
-                        fontWeight: FontWeight.w500,
-                        color: AppColors.mainBlue,
+                    child: Container(
+                      width: 132.0.w(),
+                      height: 32.0.h(),
+                      decoration: BoxDecoration(
+                        color: hasNotifications
+                            ? AppColors.primary20
+                            : AppColors.grey20,
+                        borderRadius: BorderRadius.circular(99),
+                      ),
+                      child: Center(
+                        child: Text(
+                          NotificationStrings.markAllAsReadButton,
+                          style: TextStyle(
+                            fontSize: 14.0.sp(),
+                            fontWeight: FontWeight.w500,
+                            color: hasNotifications
+                                ? AppColors.mainBlue
+                                : AppColors.grey50,
+                          ),
+                        ),
                       ),
                     ),
-                  ),
-                ),
+                  );
+                },
               ),
             ),
           ),