Refactor the display list processing loop #19727
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hrydgard
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Code Cleanup
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It was very hard to understand the combined flow of ProcessDLQueue/InterpretList, so this merges them into one big, slightly unwieldy function, but at least the flow is clear now.
And, it's pretty clear that we have timing bugs with stalled display lists, as some accounting just isn't done. In addition, when resuming from debugger breaks, we do some work that we shouldn't. The actual fixes will come in future PRs.