Fix: チャットの絵文字ピッカーが正しく入力できないことがあるのを修正

[penginn-net]

What

Fix #482

Why

Fix #482

Additional info (optional)

動いてるっぽいけどこれでいいのかしら

Checklist

• コントリビューションガイドを読みました( Read the contribution guide)
• ローカル環境で動作しました(Test working in a local environment)
• (必要なら)CHANGELOG_YOJO.mdの更新((If needed) Update CHANGELOG_YOJO.md)
• (必要なら)テストの追加((If possible) Add tests)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 20.22%. Comparing base (2801c8c) to head (3589c88).
Report is 24 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ontend/src/pages/messaging/messaging-room.form.vue	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop     #497       +/-   ##
============================================
- Coverage    40.33%   20.22%   -20.11%     
============================================
  Files         1668      787      -881     
  Lines       225103   117374   -107729     
  Branches      3857     1088     -2769     
============================================
- Hits         90802    23744    -67058     
+ Misses      133654    93042    -40612     
+ Partials       647      588       -59     

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