[bazel] Make compiler-rt analyze on macOS (#86001)

Previously the select above would fail for non-linux platforms if you
did a `bazel build @llvm-project//...`, now this target specifies that
it's only supported on the linux platform through bazel's
`target_compatible_with` feature. This makes all targets in the tree be
ignored when building on incompatible platforms (and fail if built
directly)