refactor(MySQL) (#22619)

### What does this PR do?

### How did you verify your code works?

---------

Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/sql/shared/ObjectIterator.zig

@@ -11,6 +11,10 @@ array_length: usize = 0,
 any_failed: bool = false,
 
 pub fn next(this: *ObjectIterator) ?jsc.JSValue {
+    if (this.array.isEmptyOrUndefinedOrNull() or this.columns.isEmptyOrUndefinedOrNull()) {
+        this.any_failed = true;
+        return null;
+    }
     if (this.row_i >= this.array_length) {
         return null;
     }