--frozen helpstring is missing from 0.23.0

[benmoss]

Checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pixi, using pixi --version.

Reproducible example

pixi run --help

Options:
      --manifest-path <MANIFEST_PATH>                  The path to 'pixi.toml' or 'pyproject.toml'
      --frozen                                         [env: PIXI_FROZEN=]
      --locked                                         Check if lockfile is up-to-date before installing the environment, aborts when lockfile isn't up-to-date with the manifest file
                                                       [env: PIXI_LOCKED=]

Issue description

There's no description of what --frozen does

Expected behavior

I think it uses packages from the lockfile but will never update the lockfile?

[ruben-arts]

Easiest bug fix ever, not sure why that ever changed.