Set allow_empty on unknown globs (#2509)
This means that if people build with
`--incompatible_disallow_empty_glob` things will still work.
diff --git a/examples/.bazelrc b/examples/.bazelrc
index aeb9ab4..05952d1 100644
--- a/examples/.bazelrc
+++ b/examples/.bazelrc
@@ -18,6 +18,9 @@
# https://github.com/bazelbuild/rules_rust/issues/2181
common --noenable_bzlmod
+# This isn't currently the defaut in Bazel, but we enable it to test we'll be ready if/when it flips.
+build --incompatible_disallow_empty_glob
+
# This import should always be last to allow users to override
# settings for local development.
try-import %workspace%/user.bazelrc
