fix: remove clipboard inline svg from a file with Sass

[tim-lai]

• directly load data:image/svg+xml
• current webpack config only allows inline file via jsx

Description

use background: url(data:image/svg+xml...) instead of background: url (../pathTo/file.svg)

Motivation and Context

#5278 introduced a clipboard image as svg. However, currently our webpack build does not support inline image from a file in Sass.

How Has This Been Tested?

npm run build now succeeds

Screenshots (if appropriate):

Checklist

My PR contains...

• No code changes (src/ is unmodified: changes to documentation, CI, metadata, etc.)
• Dependency changes (any modification to dependencies in package.json)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)
• Features (non-breaking change which adds functionality)

My changes...

• are breaking changes to a public API (config options, System API, major UI change, etc).
• are breaking changes to a private API (Redux, component props, utility functions, etc.).
• are breaking changes to a developer API (npm script behavior changes, new dev system dependencies, etc).
• are not breaking changes.

Documentation

• My changes do not require a change to the project documentation.
• My changes require a change to the project documentation.
• If yes to above: I have updated the documentation accordingly.

Automated tests

• My changes can not or do not need to be tested.
• My changes can and should be tested by unit and/or integration tests.
• If yes to above: I have added tests to cover my changes.
• If yes to above: I have taken care to cover edge cases in my tests.
• All new and existing tests passed.

[rehevkor5]

currently our webpack build does not support inline image from a file in Sass

Another good reason to avoid inline images is because they make it much harder to create a good Content Security Policy.