fix(addon-info): Display description when story name matches component

[misund]

Fixes #4860

See #4643
See #4685

What I did

• Display description from JSDoc when the story name matches the component
• This matches the behavior in 4.0.8
• Also retains the behavior from 4.0.9, from when the JSDoc decription is displayed when the story kind matches the component

How to test

• I added a test for when the story name matches alongside the the test for when the story kind matches

[misund]

@shilman You merged #4685, would you mind having a quick look at this PR as well? They are sort of related.

[misund]

Any feedback would be appreciated.

[igor-dv]

Tests are failing. Besides that LGTM.

[codecov]

Codecov Report

Merging #4863 into next will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             next    #4863      +/-   ##
==========================================
+ Coverage   35.31%   35.32%   +<.01%     
==========================================
  Files         582      582              
  Lines        7102     7103       +1     
  Branches      950      950              
==========================================
+ Hits         2508     2509       +1     
  Misses       4091     4091              
  Partials      503      503

Impacted Files	Coverage Δ
addons/info/src/components/Story.js	88.34% <100%> (+0.11%)	⬆️

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[misund]

Wow, I messed that up real good, didn't I.

[ndelangen]

Looks like mostly linting errors?