Cannot use error lock_mode with new experimental index urls

[darkrift]

When I locally run bazel mod deps update, the lock file is not working when we run in GHA.

In GHA, our build fails with a message saying that a section is missing (index_url) while adding that section manually also makes our GHA workflow fail saying this section should now not exist.

On linux machines, it appears that doing bazel clean --expunge followed by bazel mod deps --lockfile_mode=update toggles between adding the index_url and removing it from the facts.

This is using bazel 8.6.0

BUILD.bazel

pip_compile(
    name = "generate_requirements_linux_txt",
    python_platform = "x86_64-unknown-linux-gnu",
    requirements_in = "requirements.txt",
    requirements_txt = "requirements_linux.txt",
    tags = ["no-remote"],
)

pip_compile(
    name = "generate_requirements_macos_txt",
    python_platform = "aarch64-apple-darwin",
    requirements_in = "requirements.txt",
    requirements_txt = "requirements_macos.txt",
    tags = ["no-remote"],
)

pip_compile(
    name = "generate_requirements_macos_x86_txt",
    python_platform = "x86_64-apple-darwin",
    requirements_in = "requirements.txt",
    requirements_txt = "requirements_macos_x86.txt",
    tags = ["no-remote"],
)

multirun(
    name = "generate_requirements_lock",
    commands = [
        ":generate_requirements_linux_txt",
        ":generate_requirements_macos_txt",
        ":generate_requirements_macos_x86_txt",
    ],
    # Running in a single threaded mode allows consecutive `uv` invocations to benefit
    # from the `uv` cache from the first run.
    jobs = 1,
)

MODULE.bazel

pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
pip.parse(
    hub_name = "pip",
    python_version = python_version,
    requirements_by_platform = {
        "//:requirements_linux.txt": "linux_x86_64",
        "//:requirements_macos.txt": "osx_aarch64",
        "//:requirements_macos_x86.txt": "osx_x86_64",
    },
    target_platforms = [
        "linux_x86_64",
        "osx_aarch64",
        "osx_x86_64",
    ],
)
use_repo(pip, "pip")

requirements.txt

--index-url https://prod-artifactory.lmi.tools/artifactory/api/pypi/python-private/simple
--extra-index-url https://prod-artifactory.lmi.tools/artifactory/api/pypi/pypi-release-local/simple
asterisk-ami==0.1.7
betterproto==2.0.0b7
boto3==1.40.1
confluent_kafka==2.11.0
integration-test-common==0.7.6
jive-wiremock-api==0.1.21
lcov_cobertura==2.1.1
nats-py==2.11.0
prometheus_client==0.24.1
psycopg[binary]==3.2.9
psycopg2-binary==2.9.11
pydot==4.0.1
PyHamcrest==2.1.0
pytest==8.4.1
pytest_asyncio==1.1.0
pytest_cases==3.9.1
pytest_httpserver==1.1.3
pytest-timeout==2.4.0
redis==6.2.0
requests==2.33.0
requests-futures==1.0.2
topic-specifications==4.34.11
urllib3==2.6.3
websocket-client==1.8.0
rtclite==3.0.2