Fix Visual Studio v16.2 Compatibility
Beginning with Visual Studio 2019 v16.2 the CatchTestAdapter 1.5.1 is broken.
The new TestExplorer Window doesn't accept new test cases as a sub test case.
As a result the Catch2 SECTIONs are no longer shown as sub test cases after the first run.
Now they are shown as sub results of a test case.