This PR adds a new `send_to_model` method to the `Thread` to encapsulate more of the thread-specific capabilities. We then call this in `MessageEditor::send_to_model`. Release Notes: - N/A
This PR adds a new `send_to_model` method to the `Thread` to encapsulate more of the thread-specific capabilities. We then call this in `MessageEditor::send_to_model`. Release Notes: - N/A