fix(Popup): ignore clicks when on prop is set to hover only

[ecnaidar]

Fixes #2583.

This PR fixes incorrect behavior when on has hover value: implicitly it worked it the same way as on=['click', 'hover'].

To preserve previous behavior default value for on is now ['click', 'hover'].

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• Run yarn lint locally to catch formatting errors. This will fix some errors automatically, commit and push any changes.
• Run yarn test locally to catch errors. This ensures all components still behave as they should.
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• Include tests when adding/changing behavior.

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[codecov-io]

Codecov Report

Merging #3667 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3667      +/-   ##
==========================================
- Coverage   99.83%   99.81%   -0.03%     
==========================================
  Files         175      174       -1     
  Lines        3122     2757     -365     
==========================================
- Hits         3117     2752     -365     
  Misses          5        5

Impacted Files	Coverage Δ
src/modules/Popup/Popup.js	98.46% <100%> (-0.23%)	⬇️
src/elements/Button/Button.js	94.28% <0%> (-1.17%)	⬇️
src/modules/Sticky/Sticky.js	98.91% <0%> (-0.18%)	⬇️
src/modules/Search/Search.js	99.46% <0%> (-0.09%)	⬇️
src/modules/Transition/TransitionGroup.js	100% <0%> (ø)	⬆️
src/addons/Ref/RefFindNode.js	100% <0%> (ø)	⬆️
src/addons/Pagination/Pagination.js	100% <0%> (ø)	⬆️
src/addons/Pagination/PaginationItem.js	100% <0%> (ø)	⬆️
src/modules/Modal/Modal.js	100% <0%> (ø)	⬆️
... and 40 more

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[welcome]

Congrats on merging your first pull request! 🎉🎉🎉