fix(pie-checkbox-group): DSW-3624 resolve onChange event value property type error

[siggerzz]

Describe your changes (can list changeset entries if preferable)

Fixes #2641 by omitting onChange from React.FieldsetsHTMLAttributes to avoid type conflicts with the component's custom event handling. This follows the same pattern established in PR #2327 for other form components.

This PR was originally raised by @AZEEMAZAM1, but re-raising with preserved commit history as our CI doesn't run in forks 👍🏼

Author Checklist (complete before requesting a review, do not delete any)

• I have performed a self-review of my code.
• I have reviewed the PIE Storybook/PIE Docs PR preview.
• If changes will affect consumers of the package, I have created a changeset entry.
• If a changeset file has been created, I have tested these changes in PIE Aperture using the /test-aperture command.
• I have filled out the DS Review Tracker checklist (Moving PR to "Ready to Review")

Not-applicable Checklist items

Please move any Author checklist items that do not apply to this pull request here.

• I have reviewed visual test updates properly before approving.
• I have added thorough tests where applicable (unit / component / visual).

---

Testing

How do I test my changes?

Task	Link
Aperture PR	🔗
NextJS 15 deployment	🔗
NextJS 14 deployment	🔗
Nuxt 3 deployment	🔗
Vanilla deployment	🔗

Reviewer checklists (complete before approving)

Mark items as [-] N/A if not applicable.

Reviewer 1

• I have reviewed the PIE Storybook/PIE Docs PR preview.
• I have verified that all acceptance criteria for this ticket have been completed.
• I have reviewed the Aperture changes (if added)
• If there are visual test updates, I have reviewed them.

Reviewer 2

• I have reviewed the PIE Storybook/PIE Docs PR preview.
• I have verified that all acceptance criteria for this ticket have been completed.
• I have reviewed the Aperture changes (if added)
• If there are visual test updates, I have reviewed them.

[changeset-bot]

🦋 Changeset detected

Latest commit: 73278b9

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@justeattakeaway/pie-checkbox-group	Patch
@justeattakeaway/pie-storybook	Patch
@justeattakeaway/pie-webc	Patch
@justeattakeaway/pie-docs	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[pie-design-system-bot]

	Fails
🚫	You have unchecked checklist items outside the "Not-applicable Checklist items" section. Please ensure all unchecked checkboxes are moved to the appropriate section.
🚫	You have unchecked checklist items in Reviewer 1's section. Please ensure all items are addressed before approval.
🚫	You have unchecked checklist items in Reviewer 2's section. Please ensure all items are addressed before approval.

Generated by 🚫 dangerJS against 73278b9

[siggerzz]

/snapit

[pie-design-system-bot]

Starting a new snapshot build. You can view the logs here.

[pie-design-system-bot]

@siggerzz Your snapshots have been published to npm!

Test the snapshots by updating your package.json with the newly-published versions:

Note

If you have more than one of these packages installed, we suggest using the new snapshots for all of them to help avoid version conflicts.

yarn up @justeattakeaway/pie-checkbox-group@0.0.0-snapshot-release-20260115115640 --mode=update-lockfile

yarn up @justeattakeaway/pie-webc@0.0.0-snapshot-release-20260115115640 --mode=update-lockfile

Then finally:

yarn install

[siggerzz]

Thanks for originally raising this @cameronmcnaught!

Would you be happy to test one of the npm snapshots to see if the issue is fixed? I think in your case, you were using the pie-webc in your repo, so this is the only snapshot you'll need to install! 👍🏼

Let us know if you run into any problems!