fix(pageserver): allow repartition errors during gc-compaction smoke tests

[skyzh]

Problem

part of #9114

In #10127 we fixed the race, but we didn't add the errors to the allowlist.

Summary of changes

• Allow repartition errors in the gc-compaction smoke test.

I think it might be worth to refactor the code to allow multiple threads getting a copy of repartition status (i.e., using Rcu) in the future.

[github-actions]

7095 tests run: 6798 passed, 0 failed, 297 skipped (full report)

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Flaky tests (3)

Postgres 17

• test_timeline_archival_chaos: release-x86-64
• test_pageserver_lsn_wait_error_start: release-arm64

Postgres 14

• test_lr_with_slow_safekeeper: release-arm64

Code coverage* (full report)

• functions: 31.4% (8397 of 26782 functions)
• lines: 48.1% (66614 of 138627 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
b9eb484 at 2024-12-16T21:07:11.589Z :recycle:}