Fix Seerr Local/Jellyfin authentication and request permissions (#734)

## Description
When using LOCAL or JELLYFIN authentication methods to connect to Seerr,
the login flow was not properly establishing session cookies and user
permissions. The login would 'succeed' and you were led to thinking it
worked, but then...

This caused:
- Request functionality to be greyed out even though the user should
have access
- Users to appear to have no permissions after login (permissions=0)

## Solution
This PR fixes the authentication flow by:

**Fetching full user config after login**: For LOCAL and JELLYFIN
auth methods, the login endpoints (`authLocalPost()` and
`authJellyfinPost()`) establish the session cookie but return incomplete
user data. This PR now calls `authMeGet()` immediately after login to
fetch the fully-populated user configuration including proper
permissions.

## Tests
- Have working apk on my dev fork.
- Ran logins as Local + API. Cannot test Jellyfin due to environment,
but codewise, it looks correct.

## Related issues
Related to https://github.com/damontecres/Wholphin/issues/747


---------

Co-authored-by: Ray <154766448+damontecres@users.noreply.github.com>

app/src/main/java/com/github/damontecres/wholphin/services/SeerrServerRepository.kt

@@ -196,6 +196,7 @@ private suspend fun login(
                     password = password ?: "",
                 ),
             )
+            client.usersApi.authMeGet()
         }
 
         SeerrAuthMethod.JELLYFIN -> {
@@ -205,6 +206,7 @@ private suspend fun login(
                     password = password ?: "",
                 ),
             )
+            client.usersApi.authMeGet()
         }
 
         SeerrAuthMethod.API_KEY -> {