Change Folia check to be compatible with ShreddedPaper (#551)

ShreddedPaper is fully compatible with all folia plugins if don't check if its folia, BUT we have an empty class for RegionizedServer as MOST plugins will check for this, please be like everyone else!

src/main/java/net/coreprotect/utility/Util.java

@@ -1312,7 +1312,7 @@ public class Util extends Queue {
 
     public static boolean isFolia() {
         try {
-            Class.forName("io.papermc.paper.threadedregions.ThreadedRegionizer");
+            Class.forName("io.papermc.paper.threadedregions.RegionizedServer");
         }
         catch (Exception e) {
             return false;