Move VueFire persistence configuration to initialization (#5614)

Currently, we set persistence method in the auth store setup. This
creates pattern of using the default on init (indexed DB) up until the
firebase store is initialized and `setPersistence` is called. For
devices that don't support indexed DB or have the connection aggresively
terminated or cleared, like
[Safari](https://comfy-org.sentry.io/issues/6879071102/?project=4509681221369857&query=is%3Aunresolved&referrer=issue-stream),
this can create problems with maintaing auth persistence.

Fix by setting persistence method in the initialization in main.ts

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5614-Move-VueFire-persistence-configuration-to-initialization-2716d73d3650817480e0c8feb1f37b9a)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/stores/firebaseAuthStore.ts

@@ -6,12 +6,10 @@ import {
   GoogleAuthProvider,
   type User,
   type UserCredential,
-  browserLocalPersistence,
   createUserWithEmailAndPassword,
   deleteUser,
   onAuthStateChanged,
   sendPasswordResetEmail,
-  setPersistence,
   signInWithEmailAndPassword,
   signInWithPopup,
   signOut,
@@ -80,8 +78,6 @@ export const useFirebaseAuthStore = defineStore('firebaseAuth', () => {
   // Retrieves the Firebase Auth instance. Returns `null` on the server.
   // When using this function on the client in TypeScript, you can force the type with `useFirebaseAuth()!`.
   const auth = useFirebaseAuth()!
-  // Set persistence to localStorage (works in both browser and Electron)
-  void setPersistence(auth, browserLocalPersistence)
 
   onAuthStateChanged(auth, (user) => {
     currentUser.value = user