fix(mahjong): 麻雀をプレイできない問題を修正

[takejohn]

What

mahjongブランチにおける未定義変数などを定義しました。

Why

mahjongブランチを試してみると、ビルドに失敗したり実行時エラーが発生したりしたので。

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.70%. Comparing base (3afdafe) to head (cbbe592).
Report is 347 commits behind head on mahjong.

Additional details and impacted files

@@             Coverage Diff              @@
##           mahjong   #14268       +/-   ##
============================================
- Coverage    66.07%   39.70%   -26.37%     
============================================
  Files          990     1535      +545     
  Lines       115388   190958    +75570     
  Branches      5701     2613     -3088     
============================================
- Hits         76246    75827      -419     
- Misses       37708   114582    +76874     
+ Partials      1434      549      -885     

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[syuilo]

🙏🏿