refactor(web): finding 9 - simplify useBuilderSidebar selector

Remove generic selector overload from useBuilderSidebar; callers
destructure the full return object instead of using a selector that
provides no meaningful benefit (state is rebuilt on every render).

Claude-Session: https://claude.ai/code/session_012Bnvt1MghwHj4qQRxuQUGa

apps/web/src/routes/builder/$resumeId/-sidebar/left/index.tsx

@@ -123,7 +123,7 @@ function LockBanner() {
 }
 
 function SidebarEdge() {
-	const toggleSidebar = useBuilderSidebar((state) => state.toggleSidebar);
+	const { toggleSidebar } = useBuilderSidebar();
 
 	const scrollToSection = useCallback(
 		(section: LeftSidebarSection) => {