[ORC][clang-repl] Fix UnitTest after 122ebe3b.

Commit 122ebe3b changed the way that we look up eh-frame registration
functions. This made LLJIT work "out of the box" in some Linux configs that
didn't work before, but caused InterpreterExceptionTest to start failing:
The test was skipped if a construction of a basic LLJIT config failed, but the
test actually depended on debugger support working too. When the basic config
started working we no longer skipped the test, then failed due to missing
debugger support. I've extended the skip-test check to include the debugger
support requirement, which should fix the issue.