fix(frontend): MiAuth認可画面のデザイン修正

[kakkokari-gtyih]

What

URLが折り返されてoverflow-xが機能しなくなっていたので修正

Before

After

Why

ミスっていた

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

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 19.33%. Comparing base (dac3b1f) to head (631c4ad).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/frontend/src/pages/miauth.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #15106       +/-   ##
============================================
- Coverage    38.91%   19.33%   -19.59%     
============================================
  Files         1563      728      -835     
  Lines       197745   103802    -93943     
  Branches      3330      991     -2339     
============================================
- Hits         76960    20066    -56894     
+ Misses      120174    83182    -36992     
+ Partials       611      554       -57     

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[syuilo]

🙏