normalize string values to a single ExposeSecurityLevel instance

Author: xabbuh

DependencyInjection/MainConfiguration.php

@@ -76,7 +76,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->setDeprecated('symfony/security-bundle', '7.3', 'The "%node%" option is deprecated and will be removed in 8.0. Use the "expose_security_errors" option instead.')
                 ->end()
                 ->enumNode('expose_security_errors')
-                    ->beforeNormalization()->ifString()->then(fn ($v) => ['value' => ExposeSecurityLevel::tryFrom($v)])->end()
+                    ->beforeNormalization()->ifString()->then(fn ($v) => ExposeSecurityLevel::tryFrom($v))->end()
                     ->values(ExposeSecurityLevel::cases())
                     ->defaultValue(ExposeSecurityLevel::None)
                 ->end()

Tests/DependencyInjection/MainConfigurationTest.php

@@ -254,6 +254,9 @@ public static function provideHideUserNotFoundData(): iterable
         yield [['expose_security_errors' => ExposeSecurityLevel::None], ExposeSecurityLevel::None];
         yield [['expose_security_errors' => ExposeSecurityLevel::AccountStatus], ExposeSecurityLevel::AccountStatus];
         yield [['expose_security_errors' => ExposeSecurityLevel::All], ExposeSecurityLevel::All];
+        yield [['expose_security_errors' => 'none'], ExposeSecurityLevel::None];
+        yield [['expose_security_errors' => 'account_status'], ExposeSecurityLevel::AccountStatus];
+        yield [['expose_security_errors' => 'all'], ExposeSecurityLevel::All];
     }
 
     /**