Fixes webhook payloads for deletion events that were previously
containing incomplete or empty entity data. This occurred because
entities were being deleted from the database before the webhook event
was dispatched.
## Changes
This PR implements four targeted fixes to ensure complete entity data in
deletion event webhooks:
### 1. TaskAssignee Deletion (`pkg/models/listeners.go`)
- Extended `reloadEventData()` to fetch full assignee user data by ID
- Webhook payload now includes complete user object (username, email,
timestamps, etc.)
### 2. TaskComment Deletion (`pkg/models/task_comments.go`)
- Modified `Delete()` to call `ReadOne()` before deletion
- Ensures comment text, author, and timestamps are included in webhook
payload
- Follows the same pattern used by `Task.Delete()` and
`TaskAttachment.Delete()`
### 3. TaskAttachment Deletion (`pkg/models/task_attachment.go`)
- Extended `ReadOne()` to fetch the `CreatedBy` user
- Webhook payload now includes file creator information
### 4. TaskRelation Deletion (`pkg/models/task_relation.go`)
- Modified `Delete()` to fetch complete relation including `CreatedBy`
user before deletion
- Webhook payload now includes relation timestamps and creator
information
Fixes#2125