feat: add helperText and errorText properties for ion-checkbox

[andreas-aeschlimann]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already include this feature request, without success.

Describe the Feature Request

Checkbox are often used in an ion-items in ion-lists. Since migrating to the new label/helper/error syntax, it is not possible anymore to easily add a helper or error text to ion-checkbox.

Describe the Use Case

See above.

Describe Preferred Solution

No response

Describe Alternatives

No response

Related Code

No response

Additional Information

No response

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.