Priority Queue Documentations Missing Basic Explanation

### Describe the bug Perhaps I'm just missing something obvious but I went through the whole priority queue docs (https://www.rabbitmq.com/docs/priority#interaction-with-consumers) and kept waiting to see a basic description/example of normal behavior and I only see a description of a few edge cases (both examples cover edge cases). I'm looking for just the most general case explanation - how is priority represented in the queue and how does a consumer know how which messages to grab next? I think an example starting from a very full queue with a few different priorities would do the trick! ### Reproduction steps N/A ### Expected behavior N/A ### Additional context _No response_