Reset temporary sidebar expansion on toggle

Clear forceExpand when pin/unpin toggles so the sidebar can
collapse again after focusing the search field. Prevents the
edge case where the panel appears stuck expanded if the user
changes pin state while search has focus. No functional UI
changes beyond fixing this state leak.

Author: PeterDaveHello

src/pages/IndependentPanel/App.jsx

@@ -94,6 +94,8 @@ function App() {
 
   const toggleSidebar = async () => {
     const next = !collapsed
+    // Ensure temporary expansion is cleared when toggling pin state
+    setForceExpand(false)
     setCollapsed(next)
     try {
       await setUserConfig({ independentPanelCollapsed: next })