fix(jsx-no-leaked-render): avoid unnecessary negation operators and ternary branches deletion

[Belco90]

Closes #3297
Relates to #3292

This fixes:

• adding unnecessary negation operators
• delete valid ternary branches

[codecov]

Codecov Report

Merging #3299 (f74e30c) into master (c42b624) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head f74e30c differs from pull request most recent head e7fc22f. Consider uploading reports for the commit e7fc22f to get more accurate results

@@           Coverage Diff           @@
##           master    #3299   +/-   ##
=======================================
  Coverage   97.68%   97.69%           
=======================================
  Files         123      123           
  Lines        8737     8746    +9     
  Branches     3166     3168    +2     
=======================================
+ Hits         8535     8544    +9     
  Misses        202      202           

Impacted Files	Coverage Δ
lib/rules/jsx-no-leaked-render.js	98.24% <100.00%> (+0.32%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c42b624...e7fc22f. Read the comment docs.

[ljharb]

assuming tests pass

[pke]

Any plans when this will be released?

[ljharb]

Nope, we don’t plan release dates, they just happen when we have time.