Feature request: Try/Catch around new content types

[humanagent]

Title:
Unknown CT Blocks Conversation Loading and Sending

Description:
When a conversation contains an unknown CT, it prevents the rest of the messages from loading and blocks sending new messages. The error should be flagged, but it must not hinder continued inbox usage.

Steps to Reproduce:

1. Open a conversation containing an unknown CT.
2. Notice that the conversation stops loading messages and prevents sending new ones.

Expected Behavior:
The unknown CT should be detected and reported without affecting the rest of the inbox functionality.

Additional Context:
This improvement would allow users to keep interacting with the inbox even if an unknown CT is encountered.