You'll notice
Restoring a message draft can now merge in drafts from several earlier messages at once
What
The function that restores a message's draft (restoreMessageSync) now accepts an optional list of extra messages. When provided, it rebuilds the draft's text and any pasted content from all of those messages combined with the target message, and concatenates their text together, instead of restoring only a single message's draft.
Why
This allows a restored draft to combine content from multiple prior messages at once, rather than being limited to whichever single message is being restored.