hide Install PWA button if already in standalone mode

components/PwaManager.tsx

@@ -164,7 +164,7 @@ function PwaManager() {
         <>
             <div>
                 <h1>PWA Manager</h1>
-                {!isPWAInstalled && (
+                {!isStandAlone && !isPWAInstalled && (
                     <button
                         onClick={installPWA}
                         className="bg-blue-500 hover:bg-blue-700 text-white text-xs py-1 px-2 rounded-full focus:outline-none focus:shadow-outline transition duration-150 ease-in-out"
@@ -173,7 +173,7 @@ function PwaManager() {
                     </button>
                 )}
                 {isPWAInstalled && <p>App is installed!</p>}
-                {isStandAlone && <p>App is running in standalone mode!</p>}
+                {isStandAlone && <p>PWA App</p>}
                 <button
                     onClick={subscribeToNotifications}
                     disabled={isSubscribed}