Use configuration flags for //src/conditions:darwin_arm64
Use configuration flags for //src/conditions:darwin_arm64

Partially reverts 6d637f4165445a0d6644f6e6f8a61b3f1de208d8, to allow
cross-compiling Bazel from darwin_x86_64 to darwin_arm64 with
the `--cpu=darwin_arm64` flag.

The only source that is different between darwin_x86_64 and darwin_arm64
now is the embedded JDK.

Closes #12653.

PiperOrigin-RevId: 346298051

safarmer/bazel,perezd/bazel,twitter-forks/bazel,perezd/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,katre/bazel,bazelbuild/bazel,meteorcloudy/bazel,bazelbuild/bazel,bazelbuild/bazel,safarmer/bazel,perezd/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,meteorcloudy/bazel,meteorcloudy/bazel,cushon/bazel,katre/bazel,ButterflyNetwork/bazel,perezd/bazel,twitter-forks/bazel,twitter-forks/bazel,safarmer/bazel,safarmer/bazel,cushon/bazel,meteorcloudy/bazel,perezd/bazel,twitter-forks/bazel,meteorcloudy/bazel,cushon/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,safarmer/bazel,cushon/bazel,katre/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,katre/bazel,meteorcloudy/bazel,perezd/bazel,safarmer/bazel,katre/bazel,bazelbuild/bazel,cushon/bazel,bazelbuild/bazel,katre/bazel,perezd/bazel,ButterflyNetwork/bazel,cushon/bazel