Make auto-fixable errors blocking

[MichaelSnowden]

I want to configure my team's linter action to block merging in some cases. The linter action will appear in the CI as a failure; however, you can still merge the pull request ignoring the failure. In most cases, I want to keep the linter non-blocking to avoid false positives from blocking any pressing changes. However, for linter errors that can be auto-fixed, I want the action to block the PR from being merged. Essentially, I want to block the merge if there is any diff after running the linter with --fix=true. How can I accomplish this? Thanks!