fix(websso) remove exception when REMOTE_USER does not exist

src/Core/Security/Authentication/Infrastructure/Provider/WebSSO.php

@@ -221,6 +221,7 @@ public function validateLoginAttributeOrFail(): void
             $this->error('login header attribute not found in server environment', [
                 'login_header_attribute' => $customConfiguration->getLoginHeaderAttribute()
             ]);
+
             throw new InvalidArgumentException('Missing Login Attribute');
         }
     }

src/EventSubscriber/WebSSOEventSubscriber.php

@@ -121,13 +121,17 @@ public function loginWebSSOUser(RequestEvent $event): void
         }
 
         $this->info('Starting authentication with WebSSO');
-        $provider->authenticateOrFail(
-            LoginRequest::createForSSO($request->getClientIp())
-        );
+        try {
+            $provider->authenticateOrFail(
+                LoginRequest::createForSSO($request->getClientIp())
+            );
 
-        $user = $provider->findUserOrFail();
-        $this->createSession($request, $provider);
-        $this->info('Authenticated successfully', ['user' => $user->getAlias()]);
+            $user = $provider->findUserOrFail();
+            $this->createSession($request, $provider);
+            $this->info('Authenticated successfully', ['user' => $user->getAlias()]);
+        } catch (\InvalidArgumentException $exception) {
+            $this->info($exception->getMessage());
+        }
     }
 
     /**

tests/php/EventSubscriber/WebSSOEventSubscriberTest.php

@@ -340,7 +340,7 @@
         ->method('start');
 
     $this->subscriber->loginWebSSOUser($this->event);
-})->throws(\InvalidArgumentException::class, 'Missing Login Attribute');
+});
 
 it('should throw an exception when login matching regexp returns an invalid result', function () {
     $this->request->cookies = new InputBag();