feat: return the id of the sent message from the remaining send methods

[tarunvadde]

Two gaps that force callers past the Api and into the service.

calls, mrtd and shorten-url already return { messageId } from every method that sends a message. receipts, reactions, user-profile and media-sharing.request did not, so the id of the message just sent was unreachable.

requestUserProfile also called createRequestProfileMessage({}), dropping the query that the message class, the options type and the service all already support. Its sibling sendUserProfile forwards threadId, so the asymmetry sat inside one class.

Nothing breaks for existing callers. media-sharing.share is left alone on purpose, it returns the DidCommMediaSharingRecord so changing its return would be breaking.

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