fix: remove ~ from import of react-loading-skeleton

[adamstankiewicz]

Description

Since #2858 added the import of react-loading-skeleton's stylesheet to the core.scss file, the core stylesheet has seemingly been failing to build (i.e., @import "~react-loading-skeleton/dist/skeleton.css";):

Removing the ~ resolves the issue in the build command and Skeleton styles still appear on the docs site. I have not verified the Skeleton styles on a consuming MFE running alpha yet.

It also ensures core is included in this output of theme-urls.json, resolving a bug in openedx/frontend-build#365:

{
  "themeUrls": {
    "defaults": {
      "light": "light"
    },
    "variants": {
      "light": {
        "paths": {
          "default": "./light.css",
          "minified": "./light.min.css"
        }
      }
    },
    "core": {
      "paths": {
        "default": "./core.css",
        "minified": "./core.min.css"
      }
    }
  }
}

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.30%. Comparing base (c20b213) to head (d96f9d8).
Report is 506 commits behind head on alpha.

Additional details and impacted files

@@           Coverage Diff           @@
##            alpha    #2912   +/-   ##
=======================================
  Coverage   93.30%   93.30%           
=======================================
  Files         215      215           
  Lines        3643     3643           
  Branches      901      901           
=======================================
  Hits         3399     3399           
  Misses        239      239           
  Partials        5        5           

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[adamstankiewicz]

[inform] Opting to merge this PR to unblock progress on this frontend-build PR. The depicted build error with the core stylesheet prevents the core property from being added to the generated theme-urls.json file during npm run build.

We can come back to update the inclusion of the ~ if this fix blocks skeleton styles from loading for consuming MFEs.

[openedx-semantic-release-bot]

🎉 This PR is included in version 22.0.0-alpha.22 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[openedx-semantic-release-bot]

🎉 This PR is included in version 23.0.0-alpha.1 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[openedx-semantic-release-bot]

🎉 This PR is included in version 23.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀