Required checkbox fields in the pre-chat form now remain invalid unless
they are checked. Other required field types keep their existing
validation behavior, and the existing localized required message is
reused.
## Closes
Closes https://github.com/chatwoot/chatwoot/issues/15128
## How to reproduce
1. Add a required checkbox custom attribute to the pre-chat form.
2. Check and then uncheck it.
3. Submit the form; submission is now blocked until the checkbox is
checked.
## What changed
- Use the FormKit accepted rule for required checkbox fields.
- Map accepted validation failures to the existing pre-chat required
message.
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Co-authored-by: Nazmus Samir <nazmussamir@Nazmuss-MacBook-Pro.local>
Co-authored-by: Sojan Jose <sojan@pepalo.com>
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