Patch up radio locking and frontend contact delete behavior for bulk contact delete

frontend/src/App.tsx

@@ -558,6 +558,10 @@ export function App() {
     onToggleBlockedKey: handleBlockKey,
     onToggleBlockedName: handleBlockName,
     contacts,
+    onBulkDeleteContacts: (deletedKeys: string[]) => {
+      const keySet = new Set(deletedKeys.map((k) => k.toLowerCase()));
+      setContacts((prev) => prev.filter((c) => !keySet.has(c.public_key.toLowerCase())));
+    },
   };
   const crackerProps = {
     packets: rawPackets,