[5.3.x] 'bazel info' reports 'unknown key(s)' when specifying '--no//flag'

Description of the bug:

Looks like this was already fixed by a Googler at f6cccae and would be a trivial backport to 5.3.x.

What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

(NOTE: It doesn't matter if WORKSPACE contains a repository rule for bazel_skylib.)

$ cd $(mktemp -d)
$ touch WORKSPACE
$ cat >BUILD <<EOF
load("@bazel_skylib//rules:common_settings.bzl", "bool_flag")

bool_flag(
    name = "example",
    build_setting_default = True,
)
EOF
$ USE_BAZEL_VERSION=5.3.0 bazelisk info --no//:example
ERROR: unknown key(s): '--no//:example'

Which operating system are you running Bazel on?

Linux

What is the output of bazel info release?

release 5.3.0

If bazel info release returns development version or (@non-git), tell us how you built Bazel.

No response

What's the output of git remote get-url origin; git rev-parse master; git rev-parse HEAD ?

No response

Have you found anything relevant by searching the web?

• f6cccae

Any other information, logs, or outputs that you want to share?

No response

[fmeum]

@beasleyr-vmw If you would like to see this fix in 5.3.1, you could cherry-pick it onto the release-5.3.1 branch and submit a PR.

[aiuto]

Exactly what @fmeum said. Please send a PR.