[backport 2.x]Replace re2
with RegExp in timeline and add unit tests
#4203
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Description
Remove re2 usage and replace it with JavaScript built-in RegExp object. Also add more unit tests to make sure that using RegExp has same expressions as using re2 library.
Issue Resolve
#3901
Backport PR
#3908
Check List
yarn test:jest
yarn test:jest_integration
yarn test:ftr