[LLDB][PDB] Relax check for resolving breakpoint (#169932)
The test was flaky, because it assumed that the breakpoint was always
resolved before `r` was executed
(https://github.com/llvm/llvm-project/pull/169728#issuecomment-3589799783).
This PR removes the check for this order. It still checks that the
breakpoint is resolved before it is hit.
