fix(jest-config): correctly detect CI environment and update snapshots accordingly

[cola119]

Fixed #12288

Summary

The cause of this problem is that the current implementation for determining option.updateSnapshot does not take into account process.env.CI. We can know the value of process.env.CI in DEFAULT_CONFIG.ci.

Test plan

This PR added test cases for option.updateSnapshot and also fixed type issues by as assertions.

[SimenB]

newOptions already has the default checking the env var in it, so this only overrides that if argv has a value

[SimenB]

thanks!

[codecov-commenter]

Codecov Report

Merging #12378 (ab6db25) into main (faef0b4) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #12378      +/-   ##
==========================================
+ Coverage   68.47%   68.48%   +0.01%     
==========================================
  Files         324      324              
  Lines       16967    16969       +2     
  Branches     5060     5061       +1     
==========================================
+ Hits        11618    11622       +4     
+ Misses       5317     5315       -2     
  Partials       32       32              

Impacted Files	Coverage Δ
packages/jest-config/src/index.ts	20.73% <ø> (ø)
packages/test-utils/src/config.ts	0.00% <ø> (ø)
packages/jest-config/src/normalize.ts	88.86% <100.00%> (+0.40%)	⬆️

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[github-actions]

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