Normalize inbound reaction emoji to a canonical cross-platform name at the
central channels-core ingress, so onReaction handlers match one value
regardless of provider.
- channels-ui/emoji: add "teams" and "whatsapp" to EmojiPlatform and canonical
entries for refresh/laugh/surprised/sad/angry. Teams normalizes its
<codepoint>_<name> emoji codes (1f504_refresh -> refresh) and classic bare
names (like -> thumbs_up); an out-of-range codepoint degrades to passthrough
instead of throwing. WhatsApp uses the unicode path like Discord/Telegram.
- channels-core: add teams+whatsapp to EMOJI_PLATFORMS; IncomingReaction gains
an optional source `platform`; onReaction normalizes by
evt.platform ?? adapter.platform.
- channels-intelligence: the managed reaction dispatch passes the delivery's
source platform (env.platform) so managed reactions normalize too.
AlemTuzlak