organization creation : makes legal status mandatory

src/ApiResources/Organization/OrganizationCreationRequest.php

@@ -58,7 +58,7 @@ class OrganizationCreationRequest
     #[Assert\Regex(pattern: '/^|(W\d+)$/')]
     private string $waldecNumber = '';
 
-    private ?LegalEnum $legalStatus = null;
+    private LegalEnum $legalStatus;
 
     private SettingsProductEnum $product;
 
@@ -215,12 +215,12 @@ class OrganizationCreationRequest
         return $this;
     }
 
-    public function getLegalStatus(): ?LegalEnum
+    public function getLegalStatus(): LegalEnum
     {
         return $this->legalStatus;
     }
 
-    public function setLegalStatus(?LegalEnum $legalStatus): self
+    public function setLegalStatus(LegalEnum $legalStatus): self
     {
         $this->legalStatus = $legalStatus;