[WNMGDS-2864] Add utility actions pattern guidance page

[jack-ryan-nava-pbc]

Summary

Ticket

Added new guidance page for the utility actions pattern.

Note The design will differ on this branch because the EmailIcon is being imported from the local Doc Site component rather than the Design System. A ticket is up to fix this issue.

How to test

1. Run the doc site locally, or check the deployed demo url.
2. Confirm you can navigate to '.../patterns/utility-actions/' on the doc site
3. Confirm the copy on the page matches the copy listed in Confluence under the heading "Draft Guidance"

Checklist

• [X] Prefixed the PR title with the Jira ticket number as [WNMGDS-####] Title or [NO-TICKET] if this is unticketed work.
• [X] Selected appropriate Type (only one) label for this PR, if it is a breaking change, label should only be Type: Breaking
• [X] Selected appropriate Impacts, multiple can be selected.
• [X] Selected appropriate release milestone

This is a change to documentation:

• [ ] Checked for spelling and grammatical errors

Screenshots:

With EmailIcon collision:

Without EmailIcon collision: