[Fix] img-redundant-alt: fixed multibyte character support

[makotot]

Fixes #969.

Is it possible to replace the word boundary \b with \s+? Although it has passed unit tests.

Also, it seemed more natural not to check word boundaries for multibyte characters, which may be a difficult point to handle also related to #417.

(?!{) is removed because there is no difference in the unit test results whether it is there or not.

[ljharb]

you'll need import includes from 'array-includes'; rather than .includes but otherwise this looks great!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (540cb7a) 99.01% compared to head (7058725) 99.02%.

❗ Current head 7058725 differs from pull request most recent head 2d8d557. Consider uploading reports for the commit 2d8d557 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #970   +/-   ##
=======================================
  Coverage   99.01%   99.02%           
=======================================
  Files         105      105           
  Lines        1628     1634    +6     
  Branches      578      579    +1     
=======================================
+ Hits         1612     1618    +6     
  Misses         16       16           

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[ljharb]

@makotot hm, i rebased this and fixed one of the .includes usages, and now tests are failing. mind taking a look?

[ljharb]

nvm, i think i figured it out

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
string.prototype.includes	2.0.0	None	+0	13.8 kB	nicolo-ribaudo

[makotot]

Didn't reply due to sleep time. Thanks 🙌
I will wait for a new version to be released that includes this fix.