fix: use func_num_args to determine if $return should be used for Database Model

src/Database/Model.php

@@ -108,6 +108,6 @@
 				->where($this->where)
 				->update([$key => $value]);
 
-			return $return ?? $value;
+			return func_num_args() === 2 ? $value : $return;
 		}
 	}