feat: refactor staffing status assignment and filtering

src/Entity/Traits/SoftDeletableEntity.php

@@ -9,7 +9,7 @@ trait SoftDeletableEntity
     #[ORM\Column(nullable: true)]
     private ?\DateTimeImmutable $deletedAt = null;
 
-    public function getDeletedAt(): \DateTimeImmutable
+    public function getDeletedAt(): ?\DateTimeImmutable
     {
         return $this->deletedAt;
     }