Fix DOMDocument issues with AMP boilerplate and encodings

[swissspidy]

Summary

See #4140 for details. This is a somewhat hacky workaround for libxml < 2.8, but it's also what the AMP plugin does:

1. Remove <noscript> part from markup
2. Parse markup into DOMDocument
3. Re-add <noscript>

Relevant Technical Choices

• Ensure UTF-8 encoding

To-do

User-facing changes

N/A

Testing Instructions

---

Fixes #4140
Fixes #4166

[github-actions]

Size Change: 0 B

Total Size: 1.24 MB

ℹ️ View Unchanged

Filename	Size	Change
assets/css/edit-story.css	296 B	0 B
assets/css/stories-dashboard.css	328 B	0 B
assets/css/web-stories-embed-block.css	515 B	0 B
assets/js/chunk-web-stories-template-0-********************.js	10.2 kB	0 B
assets/js/chunk-web-stories-template-1-********************.js	10.3 kB	0 B
assets/js/chunk-web-stories-template-2-********************.js	10 kB	0 B
assets/js/chunk-web-stories-template-3-********************.js	10.5 kB	0 B
assets/js/chunk-web-stories-template-4-********************.js	10.6 kB	0 B
assets/js/chunk-web-stories-template-5-********************.js	6.86 kB	0 B
assets/js/chunk-web-stories-template-6-********************.js	9.91 kB	0 B
assets/js/chunk-web-stories-template-7-********************.js	9.78 kB	0 B
assets/js/edit-story.js	497 kB	0 B
assets/js/stories-dashboard.js	586 kB	0 B
assets/js/web-stories-activation-notice.js	63.6 kB	0 B
assets/js/web-stories-embed-block.js	16.9 kB	0 B

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[westonruter]

I assume most of the HTML class here won't be necessary once the common lib from the AMP plugin is added as a dependency?

[codecov]

Codecov Report

Merging #4141 into main will increase coverage by 47.35%.
The diff coverage is 70.16%.

@@             Coverage Diff             @@
##             main    #4141       +/-   ##
===========================================
+ Coverage   35.45%   82.81%   +47.35%     
===========================================
  Files         715      792       +77     
  Lines       12680    13948     +1268     
===========================================
+ Hits         4496    11551     +7055     
+ Misses       8184     2397     -5787     

Flag	Coverage Δ
#karmatests	70.28% <62.63%> (+41.60%)	⬆️
#unittests	65.86% <58.18%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...activation-notice/app/components/messageContent.js	0.00% <ø> (ø)
...sets/src/activation-notice/app/components/step1.js	88.88% <ø> (ø)
...activation-notice/app/components/successMessage.js	90.90% <ø> (ø)
assets/src/activation-notice/app/index.js	0.00% <0.00%> (ø)
.../activation-notice/app/utils/usePrefersDarkMode.js	0.00% <0.00%> (ø)
assets/src/activation-notice/index.js	0.00% <0.00%> (ø)
assets/src/animation/components/AMPAnimations.js	100.00% <ø> (ø)
assets/src/animation/components/AMPKeyframes.js	44.44% <ø> (ø)
assets/src/animation/components/AMPWrapper.js	100.00% <ø> (ø)
assets/src/animation/components/WAAPIWrapper.js	100.00% <ø> (ø)
... and 785 more

[swissspidy]

I assume most of the HTML class here won't be necessary once the common lib from the AMP plugin is added as a dependency?

@westonruter Yeah we'd remove all redundant parts for sure.

[spacedmonkey]

LGTM.

[westonruter]

LGTM, but I presume this will be very short-lived if we copy the Document class from the AMP plugin.