feat(auth): try to get user name from request param if not from oauth2

This is only applicable for Apple OAuth2 because this is the only
provider that does not return user name from an API call and only
returns the name in the callback URL.

Reference:
* https://developer.apple.com/documentation/sign_in_with_apple/sign_in_with_apple_js/incorporating_sign_in_with_apple_into_other_platforms#3332115

app/controllers/api/account.php

@@ -1235,7 +1235,17 @@ App::get('/v1/account/sessions/oauth2/:provider/redirect')
             $failureRedirect(Exception::USER_MISSING_ID);
         }
 
-        $name = $oauth2->getUserName($accessToken);
+        $name = '';
+        $nameOAuth = $oauth2->getUserName($accessToken);
+        $userParam = \json_decode($request->getParam('user'), true);
+        if (!empty($nameOAuth)) {
+            $name = $nameOAuth;
+        } elseif (is_array($userParam)) {
+            $nameParam = $userParam['name'];
+            if (is_array($nameParam) && isset($nameParam['firstName']) && isset($nameParam['lastName'])) {
+                $name = $nameParam['firstName'] . ' ' . $nameParam['lastName'];
+            }
+        }
         $email = $oauth2->getUserEmail($accessToken);
 
         // Check if this identity is connected to a different user