fix: use TAppState generic in ConnectAccountRedirectResult type

Changed ConnectAccountRedirectResult<AppState> to ConnectAccountRedirectResult<TAppState>
in handleRedirectCallback return type for consistency with RedirectLoginResult<TAppState>.

This ensures both union types respect the generic parameter, maintaining type safety
when consumers extend AppState with custom properties.

Author: yogeshchoudhary147

projects/auth0-angular/src/lib/auth.service.ts

@@ -309,7 +309,7 @@ export class AuthService<TAppState extends AppState = AppState>
   handleRedirectCallback(
     url?: string
   ): Observable<
-    RedirectLoginResult<TAppState> | ConnectAccountRedirectResult<AppState>
+    RedirectLoginResult<TAppState> | ConnectAccountRedirectResult<TAppState>
   > {
     return defer(() =>
       this.auth0Client.handleRedirectCallback<TAppState>(url)