ACR Connected Registries error in Azure Portal for CanadaCentral region

[cbellee]

Describe the bug Documentation bug. The Connected Registries feature docs states that it's available in the CanadaCentral region, but an error occurs when trying to enable this feature via the portal.

To Reproduce Steps to reproduce the behavior:

1. Create a new Premium ACR instance in CanadaCentral region
2. Once created, navigate to the connected registries feature blade.
3. Notice that the warning message/bar at the top of the page states that the connected registries feature isn't available in the CanadaCentral region.
4. Enabling this feature in the CanadaCentral region via the Azure CLI seems to work OK (steps from docs below).

   
   RESOURCE_GROUP=acr-test-rg
   LOCATION=canadacentral
   REGISTRY_NAME=acrtest78491823
   CONNECTED_REGISTRY_RW=acrtest78491823cxnregrw

az acr create --name $REGISTRY_NAME \ --resource-group $RESOURCE_GROUP \ --location $LOCATION \ --sku Premium

az acr update --name $REGISTRY_NAME \ --data-endpoint-enabled

az acr import \ --name $REGISTRY_NAME \ --source mcr.microsoft.com/acr/connected-registry:0.8.0

az acr import \ --name $REGISTRY_NAME \ --source mcr.microsoft.com/azureiotedge-agent:1.2.4

az acr connected-registry create --registry $REGISTRY_NAME \ --name $CONNECTED_REGISTRY_RW \ --repository "acr/connected-registry" "azureiotedge-agent"

az acr connected-registry list \ --registry $REGISTRY_NAME \ --output table

**Expected behavior**
As per the [docs](https://learn.microsoft.com/en-us/azure/container-registry/intro-connected-registry#available-regions), `CanadaCentral` region should support the Connected Registries feature. Please remove the error message in the Portal.

**Screenshots**
<img width="691" alt="image" src="https://github.com/Azure/acr/assets/8634922/75a1a7d6-ace5-42a9-a7af-d2da6d7ffb6f">

If any information is a concern to post here, you can create a [support ticket](https://azure.microsoft.com/en-us/support/create-ticket/) or send an email to acrsup@microsoft.com.

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