MWPW-154098: Retain Modal param while traversing back from Commerce to Page

[mirafedas]

When users open a modal by clicking a CTA on a merch card, navigate away, and then return, the modal needs to reopen automatically. However, this wasn't working because our catalog page uses custom modals without updating the URL hash. As a result, the URL doesn't retain information about the previously open modal.

To address this, this PR introduces URL hash management. We now add a hash to the URL whenever a modal is opened and remove it when the modal is closed. On page load, each CTA is assigned a unique hash. If the browser's URL contains the hash of a previously opened modal, we automatically trigger a click on the corresponding CTA to reopen the modal.

Resolves: MWPW-154098

Test URLs:

• Before: https://main--cc--adobecom.hlx.live/products/catalog?martech=off&georouting=off&mep=off
• After: https://main--cc--adobecom.hlx.page/products/catalog?milolibs=mwpw-154098-catalog-modal-hash--milo--mirafedas&martech=off&georouting=off&mep=off

For PSI check: https://mwpw-154098-catalog-modal-hash--milo--mirafedas.hlx.live/docs/authoring/promotions/delayed-modal?martech=off&georouting=off&mep=off

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/docs/authoring/promotions/delayed-modal?martech=off&georouting=off&mep=off
🖥️	/docs/authoring/promotions/delayed-modal?martech=off&georouting=off&mep=off

[github-actions]

This PR has not been updated recently and will be closed in 7 days if no action is taken. Please ensure all checks are passing, https://github.com/orgs/adobecom/discussions/997 provides instructions. If the PR is ready to be merged, please mark it with the "Ready for Stage" label.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.33%. Comparing base (ec48f3c) to head (5c4f5fa).
Report is 8 commits behind head on stage.

Additional details and impacted files

@@            Coverage Diff             @@
##            stage    #2781      +/-   ##
==========================================
- Coverage   96.34%   96.33%   -0.01%     
==========================================
  Files         243      243              
  Lines       55284    55322      +38     
==========================================
+ Hits        53261    53294      +33     
- Misses       2023     2028       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[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.

[yesil]

Thanks for addressing the comments.

[github-actions]

This PR has not been updated recently and will be closed in 7 days if no action is taken. Please ensure all checks are passing, https://github.com/orgs/adobecom/discussions/997 provides instructions. If the PR is ready to be merged, please mark it with the "Ready for Stage" label.