Fix: CI send coverage condition

[kitsuyui]

• pull-request events are not triggered when a PR is merged
• push events are not triggered when a PR created from a fork repository
• So we need both to run tests on every PR and after merging

[codecov-commenter]

Codecov Report

Attention: 78 lines in your changes are missing coverage. Please review.

Comparison is base (99dca13) 62.73% compared to head (88034f3) 68.99%.
Report is 111 commits behind head on main.

Files	Patch %	Lines
packages/binary/src/Detailed.tsx	34.37%	21 Missing ⚠️
packages/treemap/src/treemap.tsx	0.00%	18 Missing ⚠️
packages/textfield/src/TextArea.tsx	80.76%	10 Missing ⚠️
packages/textfield/src/TextField.tsx	80.00%	10 Missing ⚠️
packages/editablelabel/src/EditableLabel.tsx	91.66%	4 Missing ⚠️
packages/style-bulma/src/timer.tsx	33.33%	4 Missing ⚠️
packages/textfield/src/ClearButtonProvider.tsx	93.44%	4 Missing ⚠️
packages/dekamoji/src/dekamoji.tsx	80.00%	3 Missing ⚠️
packages/binary/src/Simple.tsx	75.00%	2 Missing ⚠️
packages/style-bulma/src/stopwatch.tsx	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #296      +/-   ##
==========================================
+ Coverage   62.73%   68.99%   +6.26%     
==========================================
  Files          30       39       +9     
  Lines        1119     1329     +210     
  Branches      201      243      +42     
==========================================
+ Hits          702      917     +215     
+ Misses        417      412       -5     

Flag	Coverage Δ
unittests	68.99% <76.64%> (+6.26%)	⬆️

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