SPIGOT-7581: Fix typo in BlockMushroom

By: md_5 <git@md-5.net>

paper-server/nms-patches/net/minecraft/world/level/block/BlockMushroom.patch

@@ -24,7 +24,7 @@
              return false;
          } else {
              worldserver.removeBlock(blockposition, false);
-+            BlockSapling.treeType = (this == Blocks.BROWN_MUSHROOM) ? TreeType.BROWN_MUSHROOM : TreeType.BROWN_MUSHROOM; // CraftBukkit
++            BlockSapling.treeType = (this == Blocks.BROWN_MUSHROOM) ? TreeType.BROWN_MUSHROOM : TreeType.RED_MUSHROOM; // CraftBukkit
              if (((WorldGenFeatureConfigured) ((Holder) optional.get()).value()).place(worldserver, worldserver.getChunkSource().getGenerator(), randomsource, blockposition)) {
                  return true;
              } else {