Deduplicate SignalR group messages across connections

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

When a SignalR connection is part of multiple groups, the connection will receive a message destined for the N-groups the connection is a part of also N-times. This leads to unnecessary overhead on the server, the network connection, and the client processing the messages.

### Describe the solution you'd like

A common solution for this problem is to deduplicate on the client. This however does not take away the unnecessary network traffic, and requires client side processing.

Both `DefaultHubLifetimeManager` and `RedisHubLifetimeManager` know which connections belong to a group. Hence filtering can be done easily server side.

### Additional context

_No response_