test(coordination): align claim contention recovery

[Duang777]

What changed

• Update the receipt-only claim test to expect semantic owner rejection after a provider-revision conflict is retried.
• Keep the existing no-receipt and winning-owner checks for the conflict path.
• Keep the lost-response recovery assertions, including changed=false and durable receipt recovery.

Why

#5371 made canonical claims reread and revalidate authority after conclusive CAS contention. The older fixture still expected the first provider conflict to escape unchanged. It now fails deterministically because the retry observes agent-b as the current owner and returns claim_owner_mismatch. This surfaced in #5442 typescript-core (1/3).

This PR changes only the stale test contract. It does not modify the claim implementation or #5442.

Validation

• Node 22.22.3 targeted test: 5/5 repeated runs passed.
• Node 22.22.3 local_authority_runtime.test.ts: 35/35 passed.
• npm run typecheck:control-plane: passed.
• git diff --check: passed.

Signed-off commit: ef2d1ce64.

[Duang777]

Exact-head CI attribution for ef2d1ce649a33b1ac6c92acad890c119aee1a185:

• typescript-core (1/3) and kernel-static-checks pass, directly confirming this PR fixes the stale claim-contention assertion that failed on test(runtime): wait for natural exit before cleanup #5442.
• The windows-powershell failure is the separate baseline cleanup race: test_effect_runtime_integration.py:986 raises PermissionError: [WinError 5] after locator removal. That exact failure is fixed and proven on Windows by #5442.

Keep the fixes isolated: land/sync #5442 rather than adding its cleanup change to this PR. Remaining matrix jobs are still running. No merge action was taken.