Add context to forwarded messages

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Is your feature request related to a problem? Please describe.
When forwarding a message from a conversation A to a conversation B:

• in conversation A there is not hint that the message has been forwarded to conversation B

• in conversation B there is no hint that the message came from conversation A

Describe the solution you'd like
The forwarded message should show some context about its origin, for example "Forwarded from Conversation A" in conversation B and "Forwarded to Conversation B" in conversation A.

Instead of text maybe we can use icons..

Describe alternatives you've considered

Additional context

Start by tracing the message-forwarding flow and the conversation message UI in the JavaScript client. Define how the origin and destination conversations should display forwarding context, including whether text or icons are used, and verify that both conversations show the expected context.