fix(slave-controller): add rate limit protection

[cristianscheid]

• Resolves: #

Summary

• adds BruteForceProtection on SlaveController::autoLogin()

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI

[cristianscheid]

CI errors not related to this PR.

[cristianscheid]

/backport to stable2.7

[cristianscheid]

/backport to stable2.4

[cristianscheid]

/backport to stable2.3

[cristianscheid]

/backport to stable2.1

[cristianscheid]

/backport to stable2.6

[backportbot]

The backport to stable2.6 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable2.6
git pull origin stable2.6

# Create the new backport branch
git checkout -b backport/197/stable2.6

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 088199bd

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/197/stable2.6

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/197/stable2.6."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.