Allow multiline JSX expressions when prevent option is true: jsx-newline

[TildaDares]

Fixes #3033

This is an initial PR to confirm that this is the change required to allow multi-lines in the jsx-newlines rule.

[TildaDares]

@ljharb Can you please take a quick look to see if I'm on the right track? Thank you!!

[codecov]

Codecov Report

Merging #3311 (2f8fba8) into master (ed26b15) will decrease coverage by 0.13%.
The diff coverage is 100.00%.

❗ Current head 2f8fba8 differs from pull request most recent head 8887a19. Consider uploading reports for the commit 8887a19 to get more accurate results

@@            Coverage Diff             @@
##           master    #3311      +/-   ##
==========================================
- Coverage   97.70%   97.56%   -0.14%     
==========================================
  Files         123      123              
  Lines        8746     8759      +13     
  Branches     3168     3172       +4     
==========================================
+ Hits         8545     8546       +1     
- Misses        201      213      +12     

Impacted Files	Coverage Δ
lib/rules/jsx-newline.js	100.00% <100.00%> (ø)
lib/rules/no-arrow-function-lifecycle.js	88.52% <0.00%> (-9.84%)	⬇️
lib/rules/jsx-curly-spacing.js	91.17% <0.00%> (-2.95%)	⬇️
lib/rules/jsx-props-no-spreading.js	95.65% <0.00%> (-2.18%)	⬇️
lib/util/componentUtil.js	97.33% <0.00%> (-1.34%)	⬇️

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[ljharb]

Looks great overall!

[ljharb]

Looks great!