`DistributedApplicationTestingBuilder` should disable interaction service by deault

### 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.

I have some tests that needed to access the telemetry API, so I had to enable the dashboard:

```
var builder = DistributedApplicationTestingBuilder.Create([], (opt, _) =>
{
opt.DisableDashboard = false;
opt.DashboardApplicationName = TestContext.CurrentContext?.Test.Name;
});
```

However my test ended up deadlocking as one of my resources ended up trying to use the interaction service as `InteractionService.IsAvailable` was now `true`.

### Describe the solution you'd like

I was able to fix my problem by explicitly disabling the interaction service in my tests

```
builder.Configuration["ASPIRE_INTERACTIVITY_ENABLED"] = "false";
```

But it left me wondering if this should be the default for `DistributedApplicationTestingBuilder`? Currently the value seems to be based simply on whether the dashboard is enabled. But with the dashboard now hosting APIs, it is starting to be used in non interactive scenarios.

### Additional context

_No response_