Error classes is always removed from checkbox

I've addressed the issue with checkboxes erroneously losing their error classes upon interaction. Here's a brief overview of the fix:

• Implemented a check for the 'checked' property of checkbox inputs to accurately determine their state.
• Maintained the existing validation logic for other types of inputs.

This update ensures that the error class on a checkbox is only removed when the checkbox is actually checked, which aligns with the expected behavior when the 'Automatically remove error classes when values have been entered' setting is enabled.

The MR contains the necessary adjustments.

I created a MR for review and would appreciate any feedback.

The last patch added to the issue queue is working as expected.

Quick screenshot of the Error.