feat: Show shared contact's name in Telegram channel (#10856)

# Pull Request Template

## Description

This PR adds the ability to see the shared contact name in Telegram
channels.

## Type of change

- [x] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

**Loom video**

https://www.loom.com/share/cd318056ad4d44d4a1fc4b5d4ad38d60?sid=26d833ae-ded9-4cf0-9af7-81eecfa37f19


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

app/models/attachment.rb

@@ -9,6 +9,7 @@
 #  external_url     :string
 #  fallback_title   :string
 #  file_type        :integer          default("image")
+#  meta             :jsonb
 #  created_at       :datetime         not null
 #  updated_at       :datetime         not null
 #  account_id       :integer          not null
@@ -116,7 +117,8 @@ class Attachment < ApplicationRecord
 
   def contact_metadata
     {
-      fallback_title: fallback_title
+      fallback_title: fallback_title,
+      meta: meta || {}
     }
   end