[Bazel CI] Error loading external package: Both '--enable_bzlmod' and '--enable_workspace' are disabled

[sgowroji]

CI: https://buildkite.com/bazel/bazel-at-head-plus-downstream/builds/4122#0191e992-e9e6-4d90-8662-7f5ef3aedd10

Platform: Ubuntu

Logs:

ERROR: �[0mError computing the main repository mapping: error loading package 'external': Both --enable_bzlmod and --enable_workspace are disabled, but one of them must be enabled to fetch external dependencies.
Error: The command exited with status 1�[0m
error: The plugin docker command hook exited with status 1

Culprit: bazelbuild/bazel@5881c38

Note : This issue is due to bazelbuild/bazel#23023. After --enable_workspace is flipped to false, users have to explicitly specify it where it's needed, or fully migrate to Bzlmod.

CC Greenteam @meteorcloudy