Add clock asset and enhance meeting time dialogs

- Added a new clock icon asset to the AssetsManager.
- Updated MeetingTimeBottomSheet and MeetingTimeDialog to include a close button for better user experience.
- Introduced MeetingTimeSuccessfulRegisteredBottomSheet and MeetingTimeSuccessfulRegisteredDialog for confirming meeting time registration.
- Refactored submission dialogs to improve layout and interaction consistency.

lib/views/detail/widgets/tender_detail_action.dart

@@ -88,11 +88,11 @@ class _TenderDetailActionsState extends State<TenderDetailActions> {
                                           builder: (_) {
                                             return MeetingTimeBottomSheet(
                                               onConfirm: (value) {
-                                                AppToast.success(
-                                                  context,
-                                                  TenderDetailsStrings
-                                                      .meetingTimeSuccessfullySet,
-                                                );
+                                                // AppToast.success(
+                                                //   context,
+                                                //   TenderDetailsStrings
+                                                //       .meetingTimeSuccessfullySet,
+                                                // );
                                               },
                                             );
                                           },
@@ -225,13 +225,7 @@ class _TenderDetailActionsState extends State<TenderDetailActions> {
                                           context: context,
                                           builder: (context) {
                                             return MeetingTimeDialog(
-                                              onConfirm: (value) {
-                                                AppToast.success(
-                                                  context,
-                                                  TenderDetailsStrings
-                                                      .meetingTimeSuccessfullySet,
-                                                );
-                                              },
+                                              onConfirm: (value) {},
                                             );
                                           },
                                         );