Azure Monitor: Resource groups with multiple subscriptions

### What happened? For variables if you select multiple subscriptions you cannot get resource groups for those subscriptions, list is empty. If you want to get resource everything works fine. Problem is probably [here](https://github.com/grafana/grafana/blob/main/public/app/plugins/datasource/azuremonitor/azure_resource_graph/azure_resource_graph_datasource.ts#L143C12-L143C13) When using 2 subscriptions query looks like this: ``` resources | where subscriptionId == '{aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa,bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb}' | extend resourceGroupURI = strcat("/subscriptions/", subscriptionId, "/resourcegroups/", resourceGroup) | join kind=leftouter (resourcecontainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | project resourceGroupName=name, resourceGroupURI=tolower(id)) on resourceGroupURI | project resourceGroupName=iff(resourceGroupName != "", resourceGroupName, resourceGroup), resourceGroupURI | summarize count=count() by resourceGroupName, resourceGroupURI | order by tolower(resourceGroupName) asc ``` But it should look like this: ``` resources | where subscriptionId in ('aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa' , 'bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb') | extend resourceGroupURI = strcat("/subscriptions/", subscriptionId, "/resourcegroups/", resourceGroup) | join kind=leftouter (resourcecontainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | project resourceGroupName=name, resourceGroupURI=tolower(id)) on resourceGroupURI | project resourceGroupName=iff(resourceGroupName != "", resourceGroupName, resourceGroup), resourceGroupURI | summarize count=count() by resourceGroupName, resourceGroupURI | order by tolower(resourceGroupName) asc ``` ### What did you expect to happen? Resource groups for all subscriptions should show. ### Did this work before? No idea ### How do we reproduce it? 1. Using azure monitor as data source add variable for subscriptions and allow to select multiple v…