add check for empty block in fluid sigil placement, and waterlogging#2167

wrincewind merged 1 commit intoWayofTime:1.20.1WayofTime/BloodMagic:1.20.1from

Phil-M-H:bugfix/fluid-sigils-delete-bedrockPhil-M-H/Minecraft-Java-Modding:bugfix/fluid-sigils-delete-bedrockCopy head branch name to clipboard