SignalRService crashes with "Could not load file or assembly 'System.Memory.Data, Version=6.0.0.0"

### Description

Everything compiles fine, and runs fine. But the moment you trigger something with a SignalROutput binding, you will see the error claiming it cannot find System.Memory.Data.

Running it again from this point will crash the functions host on startup with the same error.

Highly linked to Azure/azure-functions-host#10575, however as this is the repo specific for `Microsoft.Azure.Functions.Worker.Extensions.SignalRService` I figured an issue should represent it here too.

This effects 1.15.0, whereas 1.14.1 works.

I have tried all the common workarounds, like adding `<_FunctionsSkipCleanOutput>true` to the csproj, and in this instance none of them resolve the issue. Only reverting to 1.14.1.

### Steps to reproduce

- Include `Microsoft.Azure.Functions.Worker.Extensions.SignalRService`
- Write a simple function with SignalROutputTrigger
- Invoke the function
- Observe the error
- restart functions
- observe the error on startup