fix: suppress warning about non-literal child when key/defaults are specified

[glsignal]

Why am I submitting this PR

Suppress warnings about non-literal children when both the key and defaults are specified

Does it fix an existing ticket?

Yes #899

Checklist

• [x] only relevant code is changed (make a diff before you submit the PR)
• [x] tests are included and pass: yarn test (see details here)
• [ ] documentation is changed or added

[codecov-commenter]

Codecov Report

Patch coverage is 90.00% of modified lines.

Files Changed	Coverage
src/lexers/jsx-lexer.js	90.00%

:loudspeaker: Thoughts on this report? Let us know!.

[karellm]

Thanks, this is in 8.8.0