When ExtractIssuePrefix returns "hq" from an ID like "hq-cv-test"
(because "test" is word-like), but "hq-cv" is in allowedPrefixes,
we should accept "hq" since it's clearly intended to be part of "hq-cv".
This handles cases where the prefix extraction algorithm yields a
shorter prefix than the user intended, but the full intended prefix
is in the allowed list.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
c8ffcce621