Don't mutate the position of Items for MC-4 Fix (#12702)

paper-server/patches/sources/net/minecraft/world/entity/Entity.java.patch

@@ -1786,7 +1786,7 @@
      }
  
      public void addDeltaMovement(Vec3 addend) {
-@@ -3661,9 +_,45 @@
+@@ -3661,9 +_,35 @@
          return this.getZ((2.0 * this.random.nextDouble() - 1.0) * scale);
      }
  
@@ -1815,16 +1815,6 @@
 +            return;
 +        }
 +        // Paper end - Block invalid positions and bounding box
-+        // Paper start - Fix MC-4
-+        if (this instanceof ItemEntity) {
-+            if (io.papermc.paper.configuration.GlobalConfiguration.get().misc.fixEntityPositionDesync) {
-+                // encode/decode from VecDeltaCodec todo computation changed?
-+                x = Mth.lfloor(x * 4096.0) * (1 / 4096.0);
-+                y = Mth.lfloor(y * 4096.0) * (1 / 4096.0);
-+                z = Mth.lfloor(z * 4096.0) * (1 / 4096.0);
-+            }
-+        }
-+        // Paper end - Fix MC-4
          if (this.position.x != x || this.position.y != y || this.position.z != z) {
 +            synchronized (this.posLock) { // Paper - detailed watchdog information
              this.position = new Vec3(x, y, z);