[PowerPC] Temporarily disable asan longjmp tests

Commit bfdc19e77868b849b5c636bf0512970264aef571 seems to have broken
some PPC bots with a couple of asan test cases. Disable those test
cases for now until I can resolve the issue.

GitOrigin-RevId: eed0b9acdfe4409fb90b356d58c996f12cfd733f
2 files changed