fix: handle SIGINT with prompt

[snitin315]

What kind of change does this PR introduce? fix

Did you add tests for your changes? WIP If relevant, did you update the documentation? NO Summary

Does this PR introduce a breaking change? No

Other information NO

[codecov[bot]]

Codecov Report

Merging #2887 (032291e) into master (77668d7) will decrease coverage by 0.02%. The diff coverage is 90.00%.

@@            Coverage Diff             @@
##           master    #2887      +/-   ##
==========================================
- Coverage   94.96%   94.93%   -0.03%     
==========================================
  Files          31       31              
  Lines        1708     1718      +10     
  Branches      486      486              
==========================================
+ Hits         1622     1631       +9     
- Misses         86       87       +1     

Impacted Files	Coverage Δ
packages/webpack-cli/lib/utils/prompt.js	95.23% <90.00%> (-4.77%)	:arrow_down:

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[snitin315]

I am not sure how to mock CTRL + C for tests here.

[alexander-akait]

Just run process using execa and send SIGINT signal, no need to test CTRL + C, because it can be changed by user

[alexander-akait]

@snitin315 let's rebase, I think it is finished and please don't ignore windows tests, I will fix it if it will have problems