Add important note about empty analytics dashboard in evaluations lab (#254)

Since agents are created during the bootcamp, analytics data will not
be available (requires 24-48 hours). Explains there is no way to
pre-provision data and notes ongoing work with the Product Group to
provide sample visualizations for lab scenarios.

Author: Dewain27

labs/core-concepts-analytics-evaluations/README.md

@@ -140,6 +140,9 @@ Access and interpret agent analytics to measure performance and identify optimiz
 
 ### Step-by-step instructions
 
+> [!IMPORTANT]
+> **Your analytics dashboard will be empty.** Analytics data requires 24-48 hours to populate after an agent starts receiving conversations. Since your agent was just created during this bootcamp, there is no analytics data available yet. There is currently no way to pre-provision or simulate analytics data in the platform — we are actively working with the Product Group to provide a way to visualize what populated analytics would look like for lab scenarios. For now, follow the steps below to familiarize yourself with the dashboard layout, available metrics, and where to find insights once data begins flowing.
+
 #### Navigate to Analytics
 
 1. Go to Copilot Studio and select **Agents** on the left navigation. Open your Copilot Studio Assistant agent and select **Analytics** in the top navigation bar.
@@ -150,9 +153,6 @@ Access and interpret agent analytics to measure performance and identify optimiz
    - **Topic performance**: Which topics are used most frequently
    - **User satisfaction**: Feedback scores from users
 
-    > [!NOTE]
-    > Analytics data may take 24-48 hours to populate for new agents. If your agent is brand new, you may see limited or no data initially.
-
 1. Set the date range using the date picker in the top right of the analyticss:
    - Last 7 days
    - Last 30 days