Hyphen in Resource Name

When creating the resource in the Azure Portal a hyphen (-) passes validation in the resource name and the resource is successfully created.

When publishing to the resource using the hub name containing the hyphen the following error is received:

Unhandled exception. Azure.RequestFailedException: Service request failed.
Status: 400 (Bad Request)

Content:
aracters can be letters, digits or the following symbols _`,.[]
Headers:
Server: nginx
Date: Wed, 04 Aug 2021 09:41:41 GMT
Transfer-Encoding: chunked
Connection: keep-alive
Content-Type: text/plain; charset=utf-8

Reproduce the reported flow by creating an Azure Web PubSub resource with a hyphenated hub name in the Azure Portal, then publishing to it and inspecting the 400 response. No repository file or test is named; done means the accepted resource name and the publishing behavior are consistent, with a regression test covering the case.

Written by the indexing model from the issue text.