fix: deregister failed when service shutdown

[li-jin-gou]

What type of PR is this?

fix

What this PR does / why we need it (English/Chinese):

• zh: 修复取消注册失败当服务停止
• en: fix deregister failed when service shutdown

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Merging #208 (a3ad012) into develop (f02bce2) will decrease coverage by 0.01%.
The diff coverage is 16.66%.

❗ Current head a3ad012 differs from pull request most recent head 6f057f0. Consider uploading reports for the commit 6f057f0 to get more accurate results

@@             Coverage Diff             @@
##           develop     #208      +/-   ##
===========================================
- Coverage    59.00%   58.98%   -0.02%     
===========================================
  Files           79       79              
  Lines         8005     8004       -1     
===========================================
- Hits          4723     4721       -2     
- Misses        2933     2934       +1     
  Partials       349      349              

Impacted Files	Coverage Δ
pkg/app/server/hertz.go	75.00% <ø> (-2.59%)	⬇️
pkg/route/engine.go	60.25% <0.00%> (-0.78%)	⬇️
pkg/route/tree.go	96.66% <100.00%> (ø)
pkg/common/timer/timer.go	80.95% <0.00%> (+19.04%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.