Multi-character Emoji not compatible with copy and paste

In: Desktop Beta

Repro:

• Send or receive: <-note that some of these emoji are multi-character.
• Copy those emoji to clipboard.
• Paste those emoji.

Expected:
Observed: (only the first character of each emoji is preserved)

I think we're copying to the clipboard as the "name" of the emoji (e.g. ":ok_hand:"), not the emoji itself.

More good test data:

❤️
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