Generalizing the sanitizer changed the warning to one message shared by every
reserved member, moving the offending key into the log's bindings — but this
test still matched on the old message text, so it stopped finding the call at
all. Caught by `npm run ci`.
Asserting `{ key, received }` is the more durable check anyway: the message is
now common to all reserved members, while the binding is what identifies which
one was dropped.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177mPHAdECD18nLLCTwR5rh
Signed-off-by: cliffhall <cliff@futurescale.com>