Changed the flags in anonymous repos' `.bazelrc` to common so they apply to all bazel commands. (#2181)

When creating [anonymous test
repos](https://github.com/bazelbuild/bazel-central-registry/blob/00b9bfe8053208dc8983378ac3749f8d0fa1c3be/docs/README.md#reproduce-presubmit-builds-locally)
for testing BCR changes, it's useful to sometimes do `bazel query` to
verify available targets.