Revert "fix: remove int cast from getTenant to fix strict type comparison"

This reverts commit 7e84398.

Author: abnegate

src/Database/Document.php

@@ -177,7 +177,13 @@ public function getUpdatedAt(): ?string
      */
     public function getTenant(): int|string|null
     {
-        return $this->getAttribute('$tenant');
+        $tenant = $this->getAttribute('$tenant');
+
+        if (\is_numeric($tenant)) {
+            return (int) $tenant;
+        }
+
+        return $tenant;
     }
 
     /**