Expand documentation with regard to rate limiter queuing / timeouts

### Description

The current documentation does include a very brief statement with regard to rate limiters and queuing, i.e.:

> With queuing enabled, when a request exceeds the rate limit, it's placed in a queue where the request waits until a permit becomes available or until a timeout occurs.

While testing a fixed window rate limiter with a .QueueLimit > 0, requests indeed "wait" (seem to hang) until a permit becomes available as stated, but what about the "**timeout**" being mentioned? I assumed the timeout refers to the HTTP request timeout, which is configured either at a server level or on the actual endpoint, for example, by specifing: `.WithRequestTimeout(TimeSpan.FromSeconds(4));`, (if using `builder.Services.AddRequestTimeouts();` / `app.UseRequestTimeouts();` )

However, while testing, requests (with a QueueLimit > 0) never seem to timeout, they just seem to "wait" until the rate limiter window resets even if `.WithRequestTimeout();` is added to the endpoint. I would have expected an HttpContext.RequestAborted to be triggered if the request times out (before the rate limiter window resets?), but such timeouts never seem to occur - hence my request for additional details.

If an example of a "timeout" event could be added when queuing is enabled, that would be appreciated.

Thanks in advance.

### Page URL

https://learn.microsoft.com/en-us/aspnet/core/performance/rate-limit?view=aspnetcore-10.0#request-queuing

### Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/performance/rate-limit.md

### Document ID

bb96b20f-0991-d6de-4d98-192cd469460f

### Platform Id

a32d8e13-92af-9a53-cfa1-45862b1df67c

### Article author

@wadepickett

### Metadata

* ID: bb96b20f-0991-d6de-4d98-192cd469460f
* PlatformId: a32d8e13-92af-9a53-cfa1-45862b1df67c
* Service: **aspnet-core**
* Sub-service: **performance**

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