[Fix] jsx-no-target-blank: allow ternaries with literals

[akulsr0]

Fixes #3462

I have added the fix for support of conditionals in jsx-no-target-blank rule.
But not sure about one test case and it's failing. Would need some help on that.

<a href={href} target={isExternal ? "_blank" : undefined} rel={isExternal ? "noopener noreferrer" : undefined} />

As per the test case this is expected to be invalid. I am not sure if this should be invalid or not?

[ljharb]

Seems pretty good, thanks

[ljharb]

@akulsr0 i've freshly rebased this, but there's failing tests.

[akulsr0]

I have moved the following testcase (which was failing) to valid, since it is a valid scenario.

<a href={href} target={isExternal ? "_blank" : undefined} rel={isExternal ? "noopener noreferrer" : undefined} />

Reference: https://stackoverflow.com/questions/50709625/link-with-target-blank-and-rel-noopener-noreferrer-still-vulnerable

[codecov]

Codecov Report

Merging #3464 (590bde4) into master (611b9ee) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 590bde4 differs from pull request most recent head 5efd774. Consider uploading reports for the commit 5efd774 to get more accurate results

@@           Coverage Diff           @@
##           master    #3464   +/-   ##
=======================================
  Coverage   97.54%   97.54%           
=======================================
  Files         128      128           
  Lines        9110     9118    +8     
  Branches     3320     3321    +1     
=======================================
+ Hits         8886     8894    +8     
  Misses        224      224           

Impacted Files	Coverage Δ
lib/rules/jsx-no-target-blank.js	93.12% <100.00%> (+0.44%)	⬆️

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