Update Google OAuth prompt to 'consent select_account'

Changed the default OAuth prompt in config, documentation, and client initialization from 'auto' or 'force' to 'consent select_account' to ensure users are always prompted for consent and account selection. This improves clarity and aligns with current Google OAuth best practices.

Author: kawax

config/google.php

@@ -22,7 +22,7 @@
     'redirect_uri' => env('GOOGLE_REDIRECT', ''),
     'scopes' => [],
     'access_type' => 'online',
-    'prompt' => 'auto',
+    'prompt' => 'consent select_account',
 
     /*
     |----------------------------------------------------------------------------

docs/oauth.md

@@ -60,7 +60,7 @@ Update your `config/google.php`:
     \Google\Service\Drive::DRIVE,
 ],
 'access_type' => 'offline', // Required for refresh tokens
-'approval_prompt' => 'force', // Force consent to get refresh token
+'prompt' => 'consent select_account',
 ```
 
 ## Step 4: Install and Configure Laravel Socialite

lib/google/GoogleApiClient.php

@@ -33,7 +33,7 @@ public function __construct(#[\SensitiveParameter] array $config, string $userEm
 
         // only allow prompt or approval_prompt
         if (Arr::has($config, 'prompt')) {
-            $this->client->setPrompt(Arr::get($config, 'prompt', 'auto'));
+            $this->client->setPrompt(Arr::get($config, 'prompt', 'consent select_account'));
         } elseif (Arr::has($config, 'approval_prompt')) {
             $this->client->setApprovalPrompt(Arr::get($config, 'approval_prompt', 'auto'));
         }