Enterprise Scale Analytics Support in Azure Gov

**Describe the bug**
I am not able to deploy Enterprise Scale Analytics ("ESA") in Azure Gov. The deployment template does not allow me to choose any region.

Question: Is ESA supported in Azure Gov? If not, is there an ETA?

**Steps to reproduce**

1. Navigate to `https://portal.azure.us/#blade/Microsoft_Azure_CreateUIDef/CustomDeploymentBlade/uri/https%3A%2F%2Fraw.githubusercontent.com%2FAzure%2Fdata-management-zone%2Fmain%2Fdocs%2Freference%2FenterpriseScaleAnalytics.json/uiFormDefinitionUri/https%3A%2F%2Fraw.githubusercontent.com%2FAzure%2Fdata-management-zone%2Fmain%2Fdocs%2Freference%2Fportal.enterpriseScaleAnalytics.json`
- Note that I had to change from `portal.azure.com` to `portal.azure.us`
2. Proceed to "Data Management Zone" tab
3. Expand "Location" dropdown

**Screenshots**


Start with the referenced templates in docs/reference/enterpriseScaleAnalytics.json and docs/reference/portal.enterpriseScaleAnalytics.json, then verify how their location choices behave in the Azure Government portal. Compare the available Azure Government regions with the deployment requirements and document whether ESA is supported and what the current status is.

Written by the indexing model from the issue text.