feat(task-filters): implement comprehensive filter clearing functionality

- Added logic to clear label, assignee, and priority filters in ImprovedTaskFilters, enhancing user experience by allowing users to reset all filters at once.
- Updated the dependency array in the useEffect hook to include currentTaskLabels and currentTaskAssignees, ensuring proper updates on filter changes.
- Modified task management slice to change the delimiter for selected labels, assignees, and priorities from commas to spaces for improved readability.

worklenz-frontend/src/components/task-management/improved-task-filters.tsx

@@ -748,6 +748,23 @@ const ImprovedTaskFilters: React.FC<ImprovedTaskFiltersProps> = ({
       dispatch(setBoardSearch(''));
     }
     
+    // Clear label filters
+    const clearedLabels = currentTaskLabels.map(label => ({
+      ...label,
+      selected: false
+    }));
+    dispatch(setLabels(clearedLabels));
+    
+    // Clear assignee filters
+    const clearedAssignees = currentTaskAssignees.map(member => ({
+      ...member,
+      selected: false
+    }));
+    dispatch(setMembers(clearedAssignees));
+    
+    // Clear priority filters
+    dispatch(setSelectedPriorities([]));
+    
     // Clear other filters
     setShowArchived(false);
     
@@ -755,7 +772,7 @@ const ImprovedTaskFilters: React.FC<ImprovedTaskFiltersProps> = ({
     dispatch(fetchTasksV3(projectId));
     
     console.log('Clear all filters');
-  }, [projectId, projectView, dispatch]);
+  }, [projectId, projectView, dispatch, currentTaskLabels, currentTaskAssignees]);
 
   const toggleArchived = useCallback(() => {
     setShowArchived(!showArchived);