feat(pie-docs): WEBEX-341 add sticky behaviour to docs site toggle component

[xander-marjoram]

Describe your changes (can list changeset entries if preferable)

• Add sticky behaviour to the toggle component on the docs site. This allows users to switch between different pages (e.g., light/dark tokens) without needing to scroll back to the top of the page, and then back down to where they were.
• Update regular expressions to allow for longer Jira project ids

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

• I have performed a self-review of my code.
• I have added thorough tests where applicable (unit / component / visual).
• I have reviewed the PIE Storybook/PIE Docs PR preview.
• I have reviewed visual test updates properly before approving.
• 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")

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Testing

How do I test my changes?

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

Reviewer checklists (complete before approving)

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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: 3f7dd6b

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[pie-design-system-bot]

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🚫	You have unchecked checklist items outside the "Not-applicable Checklist items" section. Please ensure all unchecked checkboxes are moved to the appropriate section.
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[jamieomaguire]

I absolutely love the idea for this change, so thank you for raising it!

I do think this would benefit from some input from our designers. As the current implementation can look a little jarring during scrolling and looks ever so slightly broken. Mostly because of a lack of background containing the switch, in my opinion.

Lets chat with design and see what we can do to get this change in!