Fix: 修复依赖注入 bot event 参数 union 校验失败

[yanyongyu]

fix #998

[codecov]

Codecov Report

Merging #1001 (f89bd08) into master (fe43cc9) will increase coverage by 0.24%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1001      +/-   ##
==========================================
+ Coverage   77.45%   77.69%   +0.24%     
==========================================
  Files          42       42              
  Lines        3127     3134       +7     
==========================================
+ Hits         2422     2435      +13     
+ Misses        705      699       -6     

Flag	Coverage Δ
unittests	77.69% <100.00%> (+0.24%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
nonebot/internal/adapter/event.py	95.23% <100.00%> (+2.38%)	⬆️
nonebot/internal/params.py	97.61% <100.00%> (+1.86%)	⬆️
nonebot/utils.py	87.80% <100.00%> (+0.74%)	⬆️
nonebot/dependencies/__init__.py	89.36% <0.00%> (+1.06%)	⬆️
nonebot/dependencies/utils.py	89.28% <0.00%> (+3.57%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fe43cc9...f89bd08. Read the comment docs.

[github-actions]

🚀 Deployed on https://deploy-preview-1001--nonebot2.netlify.app

[MingxuanGame]

LGTM