chore(react): use new JSX transformations and remove react-axe

[tthvo]

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Related to #1110
Related to #482

Description of the change:

• Converted default imports to namespaced imports for react.
• Use new JSX Transformation available in React >= 17.
• Update eslint configurations to select react version that its detected instead of hardcoding (i.e. previously 16 tho we used 17).
• Removed react-axe in dev environment.

Motivation for the change:

For references about namespaced/named imports and JSX transformation:

https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html

In addition to cleaning up unused imports, this will also help you prepare for a future major version of React (not React 17) which will support ES Modules and not have a default export.

For react-axe, there is a hiccup about the requirement of default imports for React. I removed it here since we are not using in dev environment, at least until #947. There, perhaps we can explore axe cli (https://github.com/dequelabs/axe-core-npm/blob/develop/packages/cli/README.md).

This is one of the first steps to upgrade to React 18 and PF 5.

References

https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html
https://devblogs.microsoft.com/typescript/announcing-typescript-4-1/#jsx-factories

[tthvo]

/build_test

[github-actions]

Test image available:

CRYOSTAT_IMAGE=ghcr.io/cryostatio/cryostat-web:pr-1129-234fa722e1ba7463bfba36f6bfad26bda1c44376 sh smoketest.sh