[Fuzzer][Test-Only][Darwin] Mark coverage.test and exit_on_src_pos.test unsupported#165408

DanBlackwell merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

DanBlackwell:darwin-libfuzzer-test-unsupportedDanBlackwell/llvm-project:darwin-libfuzzer-test-unsupportedCopy head branch name to clipboard