Remove email-style quoted history from Hostshare messages in Inbox

Currently, messages coming from Hostshare in the Hospitable Inbox include the entire previous conversation history as quoted text (similar to an email thread). This results in messages appearing much longer than they actually are—sometimes showing 100 lines for a one-line message—with excessive blank space and repeated past messages. This issue seems specific to Hostshare, as other channels like Airbnb, VRBO, and Booking.com are not impacted. The request is for Hospitable to strip this quoted history for Hostshare messages so that only the new content is displayed.