fix(server): stop caching failed or signed-out Claude usage probes (#15836)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: SAPHID <saphid@users.noreply.github.com>
Co-authored-by: Julius Marminge <julius0216@outlook.com>
6e45544850Alex Southwell committed on 10/20/2026, 5:14:10 AM· committed by GitHubparentd1066d2
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