Amethyst growth modifier

Is your feature request related to a problem?

There are many growth modifiers in old spigot's config changing plants growth speed, but in game there is also a 20 percent chance to grow a amythyst on random tick, so it would be awesome to have an option to modify that chance too. Since paper is not a fork of spigot anymore I think thats the place to ask for it.

Describe the solution you'd like.

To have an option in:
spigot.yml

world-settings:
  default:
    growth:
      amethyst-modifier: 100

Describe alternatives you've considered.

I dont see many alternatives. Right now the only one is to have conditional probability P(A|B) implemented as chance to double the amethyst growth on BlockSpreadEvent and BlockGrowEvent, but its not ideal as you are often skipping some amethyst stages.

Other

No response

Start with the spigot.yml growth settings and the amethyst random-tick handling. Review how BlockSpreadEvent and BlockGrowEvent currently represent amethyst growth, then define completion as a configurable amethyst growth chance that preserves normal growth stages without relying on conditional event probability.