Will Miles 775e07c6d6 serveLiveLeds: Use dynamic buffer ...

There were three problems here:
- AsyncWebServer is going to copy to a heap buffer anyways, so we might
   as well just pass it one it can use
- The buffer size estimate was wrong -- we need 9 bytes per pixel
   ("RRGGBB",), so the buffer could overflow, and it was not
   considering the extra 2D requirements
- On ESP8266, the stack allocation was overflowing the stack, causing
  corruption and crashes.

2024-06-26 21:20:41 +02:00

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