[MWPW-166712] Redesign MEP button and MMM expanded interface

[AdobeLinhart]

Rework MEP button to match Figma design. Retain all existing functionality. MMM styling needs to be presentable and will be updated in a separate PR.

Resolves: MWPW-166712

Instructions:
Test all MEP button functionality. Verify MEP button matches design.

Test URLs:
MEP Button

• Before: https://main--cc--adobecom.hlx.page/products/illustrator?mep=
• After: https://main--cc--adobecom.hlx.page/products/illustrator?mep=&milolibs=mep-button-design-fix

MMM

• Before: https://main--milo--adobecom.hlx.page/docs/authoring/features/mmm
• After: https://mep-button-design-fix--milo--adobecom.hlx.page/docs/authoring/features/mmm?martech=off

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run PSI checks
• Re-sync branch

Commits

• bddffbc ✅ (latest)
• 942f257 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/docs/authoring/features/mmm?martech=off
🖥️	/docs/authoring/features/mmm?martech=off

[github-actions]

This pull request is not passing all required checks. Please see this discussion for information on how to get all checks passing. Inconsistent checks can be manually retried. If a test absolutely can not pass for a good reason, please add a comment with an explanation to the PR.

[jpratt2]

I approve. I verified that the content matches the content in an old manifest and that the options still work

[github-actions]

Reminder to set the Ready for Stage label - to queue this to get merged to stage & production.