Fix issue where PlotPlayer#getLocation returns a mutable location

Core/src/main/java/com/plotsquared/core/location/Location.java

@@ -34,6 +34,7 @@ import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import lombok.Getter;
 import lombok.Setter;
+import org.jetbrains.annotations.NotNull;
 import org.khelekore.prtree.MBR;
 import org.khelekore.prtree.SimpleMBR;
 
@@ -103,6 +104,16 @@ public class Location implements Cloneable, Comparable<Location> {
         }
     }
 
+    /**
+     * Return a copy of the location. This will pass {@link #equals(Object)}
+     * but will have a different identity.
+     *
+     * @return Copy of the location
+     */
+    @NotNull public Location copy() {
+        return new Location(this.world, this.x, this.y, this.z, this.yaw, this.pitch);
+    }
+
     public PlotArea getPlotArea() {
         return PlotSquared.get().getPlotAreaAbs(this);
     }

Core/src/main/java/com/plotsquared/core/player/PlotPlayer.java

@@ -367,7 +367,7 @@ public abstract class PlotPlayer<P> implements CommandCaller, OfflinePlotPlayer
     @NotNull public Location getLocation() {
         Location location = getMeta("location");
         if (location != null) {
-            return location;
+            return location.copy(); // Always return a copy of the location
         }
         return getLocationFull();
     }