fix: update styling and accessibility in various components

- Simplified text in DocumentsTableShell for clarity.
- Enhanced RightPanel styling for better visual consistency.
- Adjusted ChatListItem styles for improved interaction.
- Updated ReportPanelContent to include background styling and improved layout.
- Modified Drawer and FixedToolbar components for better UI integration.

surfsense_web/app/dashboard/[search_space_id]/documents/(manage)/components/DocumentsTableShell.tsx

@@ -817,7 +817,7 @@ export function DocumentsTableShell({
 					{hasDeletableSelection && (
 						<div className="flex items-center justify-between px-3 py-2 bg-muted/50 border-b border-border/50 sticky top-0 z-10">
 							<span className="text-xs text-muted-foreground">
-								{deletableSelectedIds.length} deletable selected
+								{deletableSelectedIds.length} selected
 							</span>
 							<Button
 								variant="destructive"