Some random tests and fixes (#6000)

* added tests for form models
* apply form theme only to the own custom form type
* change route order for improves matching

config/routes.yaml

@@ -1,3 +1,28 @@
+home:
+    path: /
+    defaults:
+        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
+        route: homepage
+        permanent: true
+
+# SF DefaultAuthenticationSuccessHandler uses /login as default target
+loginFallback:
+    path: /login
+    defaults:
+        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
+        _locale: '%locale%'
+        route: login
+        permanent: true
+
+# SF LogoutListener uses /logout as default target
+logoutFallback:
+    path: /logout
+    defaults:
+        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
+        _locale: '%locale%'
+        route: logout
+        permanent: true
+
 controllers:
     resource: ../src/Controller/
     type: attribute
@@ -31,13 +56,6 @@ kernel:
     resource: ../src/Kernel.php
     type: attribute
 
-home:
-    path: /
-    defaults:
-        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
-        route: homepage
-        permanent: true
-
 homeLocale:
     path: /{_locale}
     defaults:
@@ -46,24 +64,6 @@ homeLocale:
         route: homepage
         permanent: true
 
-# SF DefaultAuthenticationSuccessHandler uses /login as default target
-loginFallback:
-    path: /login
-    defaults:
-        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
-        _locale: '%locale%'
-        route: login
-        permanent: true
-
-# SF LogoutListener uses /logout as default target
-logoutFallback:
-    path: /logout
-    defaults:
-        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction
-        _locale: '%locale%'
-        route: logout
-        permanent: true
-
 2fa_login:
     path: /{_locale}/auth/2fa
     defaults: