Clarify feature availability for government clouds support in PPAC PowerAutomate Analytics

Added note about feature availability in government clouds.

Author: nordine-marie

power-platform/admin/analytics-flow.md

@@ -123,5 +123,6 @@ To view reports in another environment:
 - **Data refresh cycle**: Reports refresh approximately every 24 hours; real-time data isn't available.
 - **Exported reports**: Some fields, such as creator’s email address and flow display name, may appear blank in exported reports because these values are resolved at runtime.
 - **Visualization expansion**: When expanding visualizations, certain details—such as flow display name, environment display name, or user information—may appear as raw identifiers instead of friendly names.
+- This feature is not available in government and sovereign clouds at the moment.
 
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