fix: shorten "Share workspace" to "Share" in tasks UI (#21601)

Simplifies the CTA text from "Share workspace" to "Share" for better UX.
Users don't need to understand the underlying infrastructure when
working on tasks, so the shorter, more direct text is clearer.

**Affected locations:**
- Tasks table dropdown menu
- Tasks sidebar dropdown menu

Fixes https://github.com/coder/coder/issues/21599

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

site/src/modules/tasks/TasksSidebar/TasksSidebar.tsx

@@ -239,7 +239,7 @@ const TaskSidebarMenuItem: FC<TaskSidebarMenuItemProps> = ({ task }) => {
 										to={`/@${task.owner_name}/${task.workspace_name}/settings/sharing`}
 									>
 										<Share2Icon />
-										Share workspace
+										Share
 									</RouterLink>
 								</DropdownMenuItem>
 								<DropdownMenuSeparator />

site/src/pages/TasksPage/TasksTable.tsx

@@ -282,7 +282,7 @@ const TaskRow: FC<TaskRowProps> = ({
 								}}
 							>
 								<Share2Icon />
-								Share workspace
+								Share
 							</DropdownMenuItem>
 							<DropdownMenuSeparator />
 							<DropdownMenuItem

site/src/pages/WorkspacePage/WorkspaceActions/ShareButton.tsx

@@ -28,7 +28,7 @@ export const ShareButton: FC<ShareButtonProps> = ({
 			<PopoverTrigger asChild>
 				<TopbarButton data-testid="workspace-share-button">
 					<Share2Icon />
-					Share Workspace
+					Share
 				</TopbarButton>
 			</PopoverTrigger>
 			<PopoverContent align="end" className="w-[580px] p-4">