[lldb] Skip lldb-server unit tests when building with ASan

The lldb-server unit tests are timing out on GreenDragon and swift-ci.
We haven't been able to reproduce this locally or figure out why. We've
made several attempts to address potential issues, but we've reached a
point where we need to skip them to get signal out of this bot again.

GitOrigin-RevId: 071ac0ae3029594167d2bb4d28859bdc36367034
1 file changed