Keep Illegal Blocks

Overview

• Fix some MULTI_BLOCK_CHANGE packets that were not being sent correctly. They are now tweaked to only disable packets that replace fragile blocks with air.
  • This fixes redstone and rails (and probably other fragile blocks) that weren't updating on client sides.
  • This also fixes fragile doors from flickering.
• Change the Modrinth publishing system.
  • The mc-publish GitHub action has been replaced by the Modrinth's Minotaur Gradle task.