fix: Add sandbox attrs to live samples that call open()

[bsmth]

Changes:

• Add 'allow-popups' to several live samples
• Minor tidy of code in some live samples

Fixes:

• External links in See also

Motivation

Making live samples work again.

Related issues and pull requests

Fixes #34350

PRs:

• window.prompt() fix: Add sandbox attrs to live samples that call prompt() and confirm() #38253
• window.print() feat(css): Update live samples calling window.print(), add 'allow-modals' #38232

[github-actions]

Preview URLs

• /en-US/docs/Web/API/Blob
• /en-US/docs/Web/API/Document/hasFocus
• /en-US/docs/Web/API/Media_Capture_and_Streams_API/Taking_still_photos

Flaws (2)

Note! 2 documents with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Web/API/Media_Capture_and_Streams_API/Taking_still_photos
Title: Taking still photos with getUserMedia()
Flaw count: 2

• broken_links:
  • /en-US/docs/Glossary/aspect_ratio is ill cased
• macros:
  • Macro produces link /en-US/docs/Glossary/aspect_ratio which is a redirect

[bsmth]

Thank you