chore: Update report documentation (#13408)

New API Documentation

GET
/api/v2/accounts/{account_id}/reports/first_response_time_distribution
  - Returns first response time distribution grouped by channel type
- Shows conversation counts in time buckets: 0-1h, 1-4h, 4-8h, 8-24h,
24h+
  - Parameters: since, until (Unix timestamps)

  GET /api/v2/accounts/{account_id}/reports/inbox_label_matrix
  - Returns a matrix of conversation counts for inbox-label combinations
  - Parameters: since, until, inbox_ids[], label_ids[]

  Fixes

  - Removed unused business_hours boolean parameter from
  /api/v2/accounts/{account_id}/summary_reports/channel
- Updated ReDoc script from unstable @next to stable @2.1.5 version to
fix empty swagger page

swagger/paths/application/reports/first_response_time_distribution.yml

@@ -0,0 +1,24 @@
+tags:
+  - Reports
+operationId: get-first-response-time-distribution
+summary: Get first response time distribution by channel
+security:
+  - userApiKey: []
+description: |
+  Get the distribution of first response times grouped by channel type.
+  Returns conversation counts in different time buckets (0-1h, 1-4h, 4-8h, 8-24h, 24h+) for each channel type.
+
+  **Note:** This API endpoint is available only in Chatwoot version 4.11.0 and above.
+responses:
+  '200':
+    description: Success
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/first_response_time_distribution'
+  '403':
+    description: Access denied
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'

swagger/paths/application/reports/inbox_label_matrix.yml

@@ -0,0 +1,25 @@
+tags:
+  - Reports
+operationId: get-inbox-label-matrix
+summary: Get inbox-label matrix report
+security:
+  - userApiKey: []
+description: |
+  Get a matrix showing the count of conversations for each inbox-label combination.
+  Returns a list of inboxes, labels, and a 2D matrix where each cell contains the count of conversations
+  in a specific inbox that have a specific label applied.
+
+  **Note:** This API endpoint is available only in Chatwoot version 4.11.0 and above.
+responses:
+  '200':
+    description: Success
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/inbox_label_matrix'
+  '403':
+    description: Access denied
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'