The process should fail if no tests were found

[MaxGenash]

By default, jest fails if no tests were found. But when we use runner: 'groups' the process exits with status 0 which is unexpected and may lead to situations when we don't notice that something doesn't work, e.g. like #42 :

> test() { jest --group=$1 --verbose=false --runInBand --logHeapUsage --detectOpenHandles; }; test "unit"
Test Suites: 0 of 74 total
Tests:       0 total
Snapshots:   0 total
Time:        0.179 s, estimated 576 s
Ran all test suites.

Process finished with exit code 0

The problem is reproducible in jest-runner-groups v2.2.0 and Node.js v14.18.2