Allow import of modules with unspecified js/mjs extensions #10992

[chiatt]

Types of changes

• [x] Bugfix (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)

Description of Change

Allows import of js dependencies even if their import statements don't declare a file extension (.js or .mjs) when their type is set to 'module'. https://github.com/webpack/webpack/issues/11467#issuecomment-691702706 https://webpack.js.org/configuration/module/#resolvefullyspecified

Issues Solved

Closes #10992

Checklist

• I targeted one of these branches:
  • [x] dev/7.6.x (under development): features, bugfixes not covered below
  • [ ] dev/7.5.x (main support): regressions, crashing bugs, security issues, major bugs in new features
  • [ ] dev/6.2.x (extended support): major security issues, data loss issues
• [x] I added a changelog in arches/releases
• [ ] I submitted a PR to arches-docs (if appropriate)
• [ ] Unit tests pass locally with my changes
• [ ] I added tests that prove my fix is effective or that my feature works
• [ ] My test fails on the target branch

[chiatt]

lgtm! 👍

Thanks @chrabyrd. There does seem to be an issue with one of the packages used by AFS. @aarongundel and I are still testing to confirm it's not related to this change.

[chrabyrd]

After chatting w/ @aarongundel it looks like this change may not be necessary 👍