Revert "Skip sccache initialization on MacOS (#99121)"
This reverts commit 70ec347f0628c3ae795591b87076aefa1fe9c2ec.
Reverted https://github.com/pytorch/pytorch/pull/99121 on behalf of https://github.com/huydhn due to The cache still timeout and there is no way to increase the timeout value to be more than 10s looking at sccache code https://github.com/mozilla/sccache/blob/6bbef54b886254ce26968a0cce1e88f4a774c1bf/src/commands.rs#L48. This needs reworks
