addon-jest - Tests not being found

[lflpowell]

Tests are not being found within the jest-test-results.json file

The issue seems to be this commit 7aa23d4#r31119578

Where Storybook is creating a regex structure such as MyTest.((\.specs?)|(\.tests?))?(\.js)?$, however that is then used to test against a path string using includes which will never work.

Expected behavior
Tests to be returned.

Reverting it back to the version of using a RegExp test works as expected.

[igor-dv]

Duplicate to #4497