Enable navigation to original message when clicking files in “Files” view

[Pratheek555]

As an EmbeddedChat developer

I need to:
I want to click on a file from the All Files view and be navigated to the exact message where that file was sent.

So That:
So that I can view the file in its original conversation context and understand why and how it was shared.

https://github.com/user-attachments/assets/0cd89bfa-394f-472a-aabb-540d2903f1dd
(As of now clicking on the message does not do anything)

Acceptance Criteria

• Clicking a file in the All Files view navigates to the original message
• The chat scrolls smoothly to the target message