This change adjusts TestSuiteElement to show the trace of a failed
child, if that child is the only test case it ran and its dynamic. It
also adjusts navigation to the failed line in this case - so that
navigation goes to the failed line and not to the test method with the
@TestTemplate annotation.

Fixes: #1021
Signed-off-by: Simeon Andreev <simeon.danailov.andreev@gmail.com>