remove assert message from stack

[SimenB]

Summary

We've merged node 10 compat into master (#6055), but because we've landed breaking changes leading up to a v23, we cannot release it.

I think the changes to the message from the assert module (a diff view with swapped + and - from what Jest uses) are large enough that it will confuse users of Jest, so we should make a patch release of Jest 22 with just the removal of that diff.

In this PR, I've basically cherry picked #6055 on top of the 22.4.2 release commit. I've also setup a https://github.com/facebook/jest/tree/22.x branch which this can be merged to.

See this screenshot for example of the output this PR cleans up:

Test plan

Green CI. [email protected] also passes with this change.

[codecov-io]

Codecov Report

Merging #6061 into 22.x will decrease coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##             22.x    #6061      +/-   ##
==========================================
- Coverage   62.32%   62.31%   -0.02%     
==========================================
  Files         216      216              
  Lines        7905     7907       +2     
  Branches        4        4              
==========================================
  Hits         4927     4927              
- Misses       2977     2979       +2     
  Partials        1        1

Impacted Files	Coverage Δ
packages/jest-jasmine2/src/assert_support.js	0% <0%> (ø)	⬆️

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[SimenB]

@cpojer @mjesun do you think you could do a patch release from the 22 branch now that node 10 is out?

[mjesun]

I can do that, but I will need a couple of reminders tomorrow 😄

[mjesun]

@SimenB 22.4.3 and I patch this on top? As 22.4.4?

[SimenB]

Isn't 22.4.2 the latest? But yeah, just a patch release from the 22 branch (not from master as it contains breaking changes)

[github-actions]

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