Elytra & weather rework

With the upcoming Mounts of Mayhem drop aimed at making mounts more useful, I think this would be the perfect time to rebalance the Elytra (and weather at the same time!). These proposals, inspired by cubfan135’s video about this topic, would make weather, mounts, combat, and exploration all feel more balanced.

Weather adjustments:

• Light rain: A lighter, less obstructive version of the current rain, this would become the new “default” rain type. You can still fly but slower and fireworks are less effective.

• Thunder rain: During thunderstorms, rain intensity increases to match how rain currently looks in-game. You can still fly but much slower and fireworks have no effect.

• Light snow: A lighter, less obstructive version of the current snow, this would become the new “default” snow type. You can still fly but slower and fireworks are less effective.

• Storm snow: During snowstorms, snow intensity increases to match how snow currently looks in-game, and snow would fall faster. You can still fly but much slower and fireworks have no effect.

Environmental effects:

• Underwater or in lava: If fully submerged, Elytra and fireworks can’t be used at all. If you only pass through water or lava briefly, you can still fly but slower and fireworks are less effective (similar to the light rain effect) for a few seconds.

• While burning: You can still fly, but it's slower while burning and fireworks are less effective (similar to the rain light effect).

PS: When I mention "fly" it also implies gliding!