Environment details

• OS: Windows
• .NET version: 8.0
• Package name and version: 3.12.0

Description:

I assume google apis should switch to other protocol if QUIC is banned, but it is not when calling pubsub GetIAMPolicy.
Other api works as expected, such as ListTopics, CreateSubscriptions.

Steps to reproduce

1. Ban QUIC protocol on network level.
2. Run GetTopicIAMPolicy as the example below
   https://cloud.google.com/pubsub/docs/samples/pubsub-get-topic-policy?hl=en#pubsub_get_topic_policy-csharp
3. Result:
   Error: Grpc.Core.RpcException: Status(StatusCode="Unavailable", Detail="Error starting gRPC call. HttpRequestException: The connection timed out from inactivity. (pubsub.googleapis.com:443) QuicException: The connection timed out from inactivity.", DebugException="System.Net.Http.HttpRequestException: The connection timed out from inactivity. (pubsub.googleapis.com:443)") ---> System.Net.Http.HttpRequestException: The connection timed out from inactivity. (pubsub.googleapis.com:443)