Stop raising an error when re-running all invocations of a JUnit5 test method

[fladdimir]

#1412 (review)
Re-running invocations is currently limited to selecting a single invocation, since it works via restricting the parent-method to a single parameter-set.
So when selecting multiple invocations of the same method for a re-run, an error is thrown:

However, when selecting all invocations, the complete parent method could be re-run without any problem.

[jdneo]

To verifier:

1. Prepare a JUnit 5 parameterized test method: sample. and run it.
2. In Test explorer, select all the children of add(int, int, int)
3. Click Run/Debug Test,
4. Verify that the tests can be run