feat: Improve CSAT responses (#11485)

# Pull Request Template

## Description

This PR introduces basic customization options for the CSAT survey:

* **Display Type**: Option to use star ratings instead of emojis.
* **Message Text**: Customize the survey message (up to 200 characters).
* **Survey Rules**: Send surveys based on labels — trigger when a
conversation has or doesn't have a specific label.

Fixes
https://linear.app/chatwoot/document/improve-csat-responses-a61cf30e054e

## Type of change

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

## How Has This Been Tested?

### Loom videos

**Website Channel (Widget)**

https://www.loom.com/share/7f47836cde7940ae9d17b7997d060a18?sid=aad2ad0a-140a-4a09-8829-e01fa2e102c5

**Email Channel (Survey link)**

https://www.loom.com/share/e92f4c4c0f73417ba300a25885e093ce?sid=4bb006f0-1c2a-4352-a232-8bf684e3d757

## 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: Pranav <pranavrajs@gmail.com>

app/controllers/api/v1/accounts/inboxes_controller.rb

@@ -42,7 +42,9 @@ class Api::V1::Accounts::InboxesController < Api::V1::Accounts::BaseController
   end
 
   def update
-    @inbox.update!(permitted_params.except(:channel))
+    inbox_params = permitted_params.except(:channel, :csat_config)
+    inbox_params[:csat_config] = format_csat_config(permitted_params[:csat_config]) if permitted_params[:csat_config].present?
+    @inbox.update!(inbox_params)
     update_inbox_working_hours
     update_channel if channel_update_required?
   end
@@ -121,10 +123,22 @@ class Api::V1::Accounts::InboxesController < Api::V1::Accounts::BaseController
     @inbox.channel.save!
   end
 
+  def format_csat_config(config)
+    {
+      display_type: config['display_type'] || 'emoji',
+      message: config['message'] || '',
+      survey_rules: {
+        operator: config.dig('survey_rules', 'operator') || 'contains',
+        values: config.dig('survey_rules', 'values') || []
+      }
+    }
+  end
+
   def inbox_attributes
     [:name, :avatar, :greeting_enabled, :greeting_message, :enable_email_collect, :csat_survey_enabled,
      :enable_auto_assignment, :working_hours_enabled, :out_of_office_message, :timezone, :allow_messages_after_resolved,
-     :lock_to_single_conversation, :portal_id, :sender_name_type, :business_name]
+     :lock_to_single_conversation, :portal_id, :sender_name_type, :business_name,
+     { csat_config: [:display_type, :message, { survey_rules: [:operator, { values: [] }] }] }]
   end
 
   def permitted_params(channel_attributes = [])