DaylightChangerStruggle

A pretty minor update and a backport for 1.20.1!

## Additions (for this port only)
* Rainbow Shader is used
  * Based on the initial release version from 1.19 with changes to support this version

## Changes
* List Widget: The background gradient will now hide if the scrollbar is already displayed due to list entries
  already having the gradient effect themselves

## Bugfixes
* List Widget: Fixed certain visual and interaction issues by removing offsets by which the list widgets never used
* Configuration: Internally added the ability for the property `allowWorldChangeCyclesToWriteToDisk` to be written to 
  disk due to an oversight in v0.0.1
  * Note: Previously, this property would be read but if wanted to be written to disk, this simply wouldn't happen
    as there wasn't anything hinting that it should have