`--all` CLI option missing integration tests

We use the `--all` option in Fusion build conformance and encountered a bug that is not covered in the current integration tests because there isn't a test case for `--all`. I tested out just adding another case with `all=True` in https://github.com/dbt-labs/dbt-autofix/pull/187 but it needs a bit more work to get the expected output to match the actual. So I'm opening this issue to follow up on that.