tests(chalk): Force chalk to on in matcher tests for consistency (#5652)
tests(chalk): Force chalk to on in matcher tests for consistency (#5652)

## Summary

Follow up to #5646. Forces `chalk` to be turned on in matcher tests for
consistent snapshot output. Should fix tests on TravisCI.

## Test plan

Existing tests should pass. TravisCI should pass.

facebook/jest,bookman25/jest,cpojer/jest,ide/jest,cpojer/jest,facebook/jest,facebook/jest,bookman25/jest,ide/jest,ide/jest,cpojer/jest,bookman25/jest