[libcxx] [test] Ifdef out tests that rely on perms::none on directories for triggering errors

On Windows, one can't use perms::none on a directory to trigger
failures to read the directory entries.

These remaining tests can't use GetWindowsInaccessibleDir() sensibly,
e.g. for tests that rely on toggling accessibility back and forth during
the test, or where the semantics of the dir provided by
GetWindowsInaccessibleDir() doesn't allow for running the ifdeffed tests
meaningfully.

Differential Revision: https://reviews.llvm.org/D97538

GitOrigin-RevId: f9ddb81d79b2c6d0cf7e509f04f70f5c0c0560b3
14 files changed