WORLDGUARD-4088 - Reported by Zodox

I would like to request flags for "plant-growth" ,one flag for all plants or maybe even plant specific ones like "wheat-growth" for example
Since i wanna preserve specific growth stages of plants to add more variety, probably not just me :)

In my case, CMI can handle and switch though different block stages (/cmi blockcycling but disabled for incombatibility in 1.13.2, not sure if it will come back but i hope so :) ) but also using bonemeal to get to the desired stage would be possible, so overall those flags should just disable "natural growth"