feat: MWPW-143356 | add floating-button block

[jrrings]

Describe your specific features or fixes

Adding the floating button block

The floating button only seems to be utilized on desktop. For mobile scenarios, it looks like the multifunction-button is used. So when testing on mobile, you should not expect to see a floating button.

Resolves: MWPW-143356

Test URLs:

• Pre Migration Link: https://adobe.com/express/create/story/instagram
• Before: https://main--express-milo--adobecom.hlx.page/express/create/story/instagram
• After: https://MWPW-143356--express-milo--adobecom.hlx.page/express/create/story/instagram

Additional Testing URLs:

• https://MWPW-143356--express-milo--adobecom.hlx.page/express/create/story/instagram
• https://MWPW-143356--express-milo--adobecom.hlx.page/es/express/collections/wedding
• https://MWPW-143356--express-milo--adobecom.hlx.page/express/learn/express-your-brand

[aem-code-sync]

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Commits

• 45dbdeb ✅ (latest)

[aem-code-sync]

Page	Scores	Audits
/es/express/collections/wedding
/express/create/story/instagram
/express/learn/express-your-brand

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 40.22727% with 526 lines in your changes missing coverage. Please review.

Project coverage is 56.92%. Comparing base (5b9c2b7) to head (45dbdeb).
Report is 14 commits behind head on main.

Files	Patch %	Lines
express/scripts/utils/pricing.js	32.25%	271 Missing ⚠️
express/scripts/widgets/floating-cta.js	44.13%	238 Missing ⚠️
express/scripts/utils.js	10.52%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
- Coverage   57.22%   56.92%   -0.31%     
==========================================
  Files          22       26       +4     
  Lines        3521     4550    +1029     
==========================================
+ Hits         2015     2590     +575     
- Misses       1506     1960     +454     

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[jrrings]

replaced by: #40