Readd mc-4 fix

patches/server/Guard-against-invalid-entity-positions.patch

@@ -41,5 +41,5 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        }
 +        // Paper end - block invalid positions
          // Paper end
-         if (this.position.x != x || this.position.y != y || this.position.z != z) {
-             synchronized (this.posLock) { // Paper
+         // Paper start - fix MC-4
+         if (this instanceof ItemEntity) {