New variant of the rabbit the Flemish rabbit

The Flemish Giant rabbit would act as a distinct, heavy-bodied variant that completely flips the behavior of standard Minecraft rabbits. Instead of the tiny 0.5-block size, this mob would stand at a much larger 1.0 block high and 1.2 blocks wide, matching the chunkier, oversized proportions of real-world Flemish Giants. Because of their massive weight, they would lack the skittish, frantic nature of normal rabbits; they would move with slow, heavy thumping hops and completely ignore the player's presence rather than running away. They would possess a much larger health pool of 12 points (6 hearts) and have a unique AI trait where they actively seek out and sit on top of fully grown carrot and pumpkin crops, slowly nibbling them down over time. When bred with dandelions or golden carrots, they would produce higher yields of rabbit hide, making them a highly valuable, domestic farm animal for players to keep in fenced enclosures.