test(admin): cover heal alias routes

[overtrue]

Type of Change

• New Feature
• Bug Fix
• Documentation
• Test/CI
• Performance Improvement
• Refactor
• Other:

Related Issues

N/A

Summary of Changes

This PR closes a narrow coverage gap in the admin compatibility route tests for the recent heal compatibility work. The existing alias-contract test verified MinIO-compatible admin aliases for several endpoints, but it did not register the heal routes and therefore did not exercise the newly added heal alias paths at all.

The change updates rustfs/src/admin/route_registration_test.rs to register heal routes in the alias test and assert the MinIO-compatible aliases for root heal, bucket heal, prefix heal, and background-heal status. This keeps the test scope aligned with the recent routing change and gives reviewers a direct regression signal if compatibility coverage is lost.

Checklist

• I have read and followed the CONTRIBUTING.md guidelines
• Passed make pre-commit
• Added/updated necessary tests
• Documentation updated (if needed)
• CI/CD passed (if applicable)

Impact

• Breaking change (compatibility)
• Requires doc/config/deployment update
• Other impact:
  Adds focused regression coverage for MinIO-compatible heal admin routes.

Additional Notes

Verification performed locally:

• cargo test -p rustfs test_admin_alias_paths_match_existing_admin_routes -- --nocapture
• make pre-commit

The targeted test failed before the setup/assertion update because the alias-contract test never registered heal routes, which left the recent compatibility paths untested.

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[Copilot]

Pull request overview

Closes a coverage gap in the admin compatibility route tests by ensuring MinIO-compatible “heal” alias routes are registered and asserted in the existing alias-contract test.

Changes:

• Registers heal admin routes in the alias-path compatibility test setup.
• Adds assertions for MinIO-compatible alias paths covering root heal, bucket heal, prefix heal, and background-heal status.