build: add workaround to support RBE on macOS and windows #22423
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Adds a workaround for
bazel-toolchains
that allows us touse RBE on macOS or Windows. This no longer works with the
recent upgrades to
bazel-toolchains
.t
It seems like we can remove this workaround once
bazel-toolchains
supports cross-compilation, or if we start generating the
toolchain configurations our own (needs more investigation).