re-show restart card after subsequent credential changes

Reset the dismissed ref when navigating back to Providers so new
credential changes surface the restart notice again.

Signed-off-by: morgmart <98432065+morgmart@users.noreply.github.com>

ui/goose2/src/features/settings/ui/SettingsModal.tsx

@@ -140,7 +140,9 @@ export function SettingsModal({
   }, [showRestartCard]);
 
   useEffect(() => {
-    if (activeSection !== "providers" && showRestartCard) {
+    if (activeSection === "providers") {
+      restartDismissedRef.current = false;
+    } else if (showRestartCard) {
       setRestartCardVisible(false);
       setShowRestartCard(false);
       restartDismissedRef.current = true;