* fix(imessage): recognize bare hex group chat identifiers as chat targets
A 32-char hex iMessage group chat identifier (as returned by `imsg` for
group chats) with no explicit `chat_identifier:` prefix fell through to
E.164 phone-number normalization. normalizeE164 strips non-digit
characters and prepends `+`, turning
`7d5297154d5f436d83dbbdf03fcc8fdd` into `+75297154543683038` -- a
bogus phone number. Cron/announce delivery then reported
`delivered: true` while silently sending to a nonexistent recipient.
Detect bare 32-char hex strings in both the send-path target parser
(extensions/imessage/src/targets.ts) and the outbound delivery-target
normalizer (extensions/imessage/src/normalize.ts) and route them as
chat_identifier targets, consistent with how an explicit
`chat_identifier:<id>` prefix already resolves.
Fixes#89235.
* refactor(imessage): centralize bare chat identifiers
* refactor(imessage): centralize bare chat identifiers
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Co-authored-by: Peter Steinberger <peter@steipete.me>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
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