…g unit tests

We only want to _filterTestPathsWithStats if testPathPattern was
explicitly passed as an argument. The issue is that it's not possible to
simply null check globalConfig.testPathPattern to determine if it was
explicity passed becase that field gets populated with values passed to
findRelatedTests also. This approach compares the values in
globalConfig.testPathPattern to the values in globalConfig.nonFlagArgs
and if it is a 1 to 1 match it is assumed that testPathPattern was not
explicity passed as an argument.

findRelatedTests used to be a boolean field. It has been updated to be Array<string>. We will check the length of the array to determine if findRelatedTests is falsy or truthy since 0 will evaluate to false and aything greater than 0 will evaluate to true.

simple test that asserts --testPathPattern will filter tests matched by --findRelatedTests

for some reason this lint command works locally but fails in CI

eslint . --cache --report-unused-disable-directives --ext js,jsx,ts,tsx,md --format junit -o reports/junit/js-lint-results.xml