unsafe recovery: Fix learner nodes got ignored in auto detect mode error (#6691)

[ti-chi-bot]

This is an automated cherry-pick of #6691

What problem does this PR solve?

Issue Number: Close #6690

What is changed and how does it work?

Fix learner nodes got ignored in auto detect mode error

Check List

Tests

• Unit test

Code changes

Side effects

Related changes

This PR does not need to be cherry-picked into release 6.5, since the customized PR #6683 will be.

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has not been approved.

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[ti-chi-bot]

This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick, it must first be approved by the collaborators.

AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[nolouch]

could you please fix the conflict? @v01dstar

[v01dstar]

could you please fix the conflict? @v01dstar
We can close this cherry-pick, just checked that the bug only occurs after "auto mode" was introduced, it does not exist in 6.1