Fix double ctrl-c kill

[ahopkins]

#2621 Added SIGKILL to the second ctrl+c. But, this only worked on route handler delays and not listeners. By moving the logic from terminated to shutting_down, we are targeting the intended behavior and for both scenarios.

[codecov]

Codecov Report

Base: 88.526% // Head: 88.659% // Increases project coverage by +0.133% 🎉

Coverage data is based on head (853ff61) compared to base (f7040cc).
Patch coverage: 100.000% of modified lines in pull request are covered.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #2634       +/-   ##
=============================================
+ Coverage   88.526%   88.659%   +0.133%     
=============================================
  Files           82        82               
  Lines         6746      6746               
  Branches      1152      1152               
=============================================
+ Hits          5972      5981        +9     
+ Misses         532       528        -4     
+ Partials       242       237        -5     

Impacted Files	Coverage Δ
sanic/worker/manager.py	94.047% <100.000%> (+2.976%)	⬆️
sanic/worker/process.py	89.090% <0.000%> (-1.819%)	⬇️
sanic/http/http1.py	83.561% <0.000%> (-0.685%)	⬇️
sanic/server/websockets/impl.py	38.479% <0.000%> (+0.691%)	⬆️
sanic/app.py	89.836% <0.000%> (+0.725%)	⬆️

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