fix(reactHtml): renderScripts adding unknown integrity

[JAdshead]

Description

Fallback externals do not support legacy, remove legacy logic to ensure does not load missing scripts.
Warn when missing integrity when rendering scripts

Motivation and Context

Fix SSR when fallback externals are required and has no integrity value provided

How Has This Been Tested?

Test suite

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (adding or updating documentation)
• Dependency update
• Security update

Checklist:

• My change requires a change to the documentation and I have updated the documentation accordingly.
• These changes should be applied to a maintenance branch.
• This change requires cross browser checks.
• Performance tests should be ran against the server prior to merging.
• This change impacts caching for client browsers.
• This change impacts HTTP headers.
• This change adds additional environment variable requirements for One App users.
• I have added the Apache 2.0 license header to any new files created.

What is the Impact to Developers Using One App?

[github-actions]

Size Change: +215 B (0%)

Total Size: 712 kB

Filename	Size	Change
./build/app/app~vendors.js	411 kB	+215 B (0%)

ℹ️ View Unchanged

Filename	Size
./build/app/app.js	164 kB
./build/app/runtime.js	7.07 kB
./build/app/service-worker-client.js	7.25 kB
./build/app/vendors.js	123 kB

_{compressed-size-action}

[Matthew-Mallimo]

fallback externals do not include integrity values

But shouldn't they?

[JAdshead]

fallback externals do not include integrity values

But shouldn't they?

Yes, but instead of crashing in the client this will more gracefully load the script

[Matthew-Mallimo]

I this required? If I remember correctly the 1.9.0 release was done unintentionally?

[JAdshead]

yes, it includes the fixes for integrity loading in holocron - americanexpress/holocron#162