`Microsoft.Insights/dataCollectionRules` - missing enum stream definition `Microsoft-HealthStateChange`

According to this comment: https://github.com/Azure/bicep/issues/784#issuecomment-943475185, `Microsoft-HealthStateChange` is a valid enum value for the `ExtensionDataSource` `streams` property, but it is not defined in swagger:

https://github.com/Azure/azure-rest-api-specs/blob/88e7838a09868a51de3894114355c75929847a46/specification/monitor/resource-manager/Microsoft.Insights/stable/2021-04-01/dataCollectionRules_API.json#L477-L483

Start with specification/monitor/resource-manager/Microsoft.Insights/stable/2021-04-01/dataCollectionRules_API.json around the ExtensionDataSource streams enum and compare it with the linked Bicep comment. Done means the valid Microsoft-HealthStateChange stream is represented in the specification and the resulting spec validation passes.

Written by the indexing model from the issue text.