A few more compute_ctl changes

[HaoyuHuang]

Summary of changes

A bunch of no-op changes.

The only other thing is that the lock is released early in the terminate func.

[github-actions]

8150 tests run: 7511 passed, 0 failed, 639 skipped (full report)

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Flaky tests (9)

Postgres 17

• test_lfc_prefetch: release-arm64-with-lfc
• test_readonly_node_gc: release-arm64-with-lfc
• test_ps_unavailable_after_delete[DeletionAPIKind.FORCE]: release-x86-64-with-lfc, release-arm64-without-lfc

Postgres 16

• test_hot_standby_gc[True]: release-x86-64-with-lfc
• test_ps_unavailable_after_delete[DeletionAPIKind.FORCE]: release-x86-64-with-lfc

Postgres 15

• test_tx_abort_with_many_relations[v2]: release-arm64-with-lfc

Postgres 14

• test_lfc_prefetch: release-arm64-with-lfc
• test_multiple_subscription_branching: release-arm64-with-lfc

Code coverage* (full report)

• functions: 34.7% (8804 of 25343 functions)
• lines: 45.8% (71280 of 155649 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
4ad04e7 at 2025-07-24T15:02:39.722Z :recycle:}

[tristan957]

Really would have liked #12717 to go in before this merged to keep git history in tact...