Returns comprehensive approval workflow history including all submission attempts and approver activity.

Important: This endpoint returns ONLY approval domain data with user IDs and comment IDs as references. To get full details:

• User details: Call GET /users with user IDs from this response
• Order details: Call GET /orders/{orderId}
• Comment messages: Call GET /orders/{orderId}/comments

The response includes:

• All submission attempts (if order was rejected and resubmitted)
• All workflows triggered for each submission
• Detailed approval states with approver user IDs (not names)
• Summary statistics across all attempts