MWPW-202435: Tech debt: avoid relocating mas-field CTA content outside the mas-field wrapper

[joaquinrivero]

Resolves https://jira.corp.adobe.com/browse/MWPW-202435

mas-field now stamps its context onto the CTA and price directly (dropping the old copy helpers) and holds the CTA until the price resolves

Companion PR (milo): adobecom/milo#6586

• C1. Cover code with Unit Tests
• C2. Add a Nala test (double check with #fishbags if nala test is needed)
• C3. Verify all Checks are green (unit tests, nala tests)
• C4. PR description contains working Test Page link where the feature can be tested
• C5: you are ready to do a demo from Test Page in PR
• C.6 read your Jira one more time to validate that you've addressed all AC's

Test URLs:

• Before: https://main--edu--adobecom.aem.page/education/students/creativecloud?instant=2026-08-19T00%3A00%3A00.000Z&mep=off&mas.preview=on&country=US&clearCaches.io
• After: https://main--edu--adobecom.aem.page/education/students/creativecloud?instant=2026-08-19T00%3A00%3A00.000Z&mep=off&mas.preview=on&country=US&clearCaches.io&maslibs=MWPW-202435&milolibs=MWPW-202435

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Commits

• 4fbf5ec ✅ (latest)
• 0dccdb3 ✅
• 2ed218e ✅
• d410cc6 ✅
• e7cb8b5 ✅
• 00d1df7 ✅
• faf3ee6 ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.64%. Comparing base (fa87839) to head (4fbf5ec).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1185      +/-   ##
==========================================
+ Coverage   90.62%   90.64%   +0.01%     
==========================================
  Files         308      308              
  Lines       99175    99198      +23     
==========================================
+ Hits        89877    89915      +38     
+ Misses       9298     9283      -15     

Files with missing lines	Coverage Δ
web-components/src/mas-field.js	98.91% <100.00%> (+0.02%)	⬆️

... and 8 files with indirect coverage changes

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[TsayAdobe]

I would use an early return when element is undefined rather than relying on multiple optional chaining checks.

[Axelcureno]

Approving — nice fix. Went and checked the actual mechanism this depends on: the new global-ish data-promotion-code/fragment-id ownership check in priceOptionsProvider/checkoutOptionsProvider now runs on every price/checkout element, not just mas-field's own, but collectPriceOptions/collectCheckoutOptions always re-merge the element's own dataset after providers run, so it can't clobber merch-card's own promo (including cancel-context) resolution. Also cross-checked the companion milo#6586 diff — it deletes Milo's own re-stamping and fully trusts this, and checkReady() already guarantees #stampContext runs before Milo unwraps, so no race there either.

Small nit: #stampContext's selector is hardcoded (a[data-wcs-osi],button[is="checkout-button"],span[is="inline-price"]) instead of reusing SELECTOR_MAS_CHECKOUT_LINK/SELECTOR_MAS_INLINE_PRICE from constants.js — worth a follow-up so it doesn't drift.

[yesil]

@joaquinrivero I think the PR title is wrong, but looking at the JIRA, LGTM.

[Roycethan]

@joaquinrivero Plz see the error in https://github.com/adobecom/mas/actions/runs/33438620327/job/99641065094?pr=1185
Its happening previous PR merge on Settings (annual pricing)