Broken on Bazel 8.0.0rc4

[nya3jp]

See bazelbuild/bazel-central-registry#3260

(09:28:40) ERROR: Traceback (most recent call last):
  | File "/var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/273f34efad2b9494f33b5a6efd0239c1/external/rules_contest+/contest/impls/BUILD.bazel", line 4, column 9, in <toplevel>
  | lint_all()
  | File "/var/lib/buildkite-agent/.cache/bazel/_bazel_buildkite-agent/273f34efad2b9494f33b5a6efd0239c1/external/rules_contest+/lint/defs.bzl", line 32, column 27, in lint_all
  | bzl_srcs = native.glob(["WORKSPACE", "WORKSPACE.bazel", "BUILD", "BUILD.bazel", "*.bzl"])
  | Error in glob: glob pattern 'WORKSPACE' didn't match anything, but allow_empty is set to False (the default value of allow_empty can be set with --incompatible_disallow_empty_glob).

Looks like the default value for --incompatible_disallow_empty_glob has been flipped.