Dont query remote cache but always use bytestream protocol

[coeuvre]

When using --experimental_remote_build_event_upload=minimal, instead of querying remote cache to decide whether convert local path of a file to bytestream://, it now always use bytestream:// for BEP referenced files.

Closes https://github.com/bazelbuild/bazel/pull/16999.

[brentleyjones]

@bazel-io flag (for 6.1.0)

[meteorcloudy]

@bazel-io fork 6.1.0

[brentleyjones]

Friendly post-holiday ping @tjgq 🙏.