Copy NBT in upgrade data neighbor ticks

patches/server/0015-Rewrite-dataconverter-system.patch

@@ -17011,7 +17011,7 @@ index 0000000000000000000000000000000000000000..f06e24bb87baf01b1386fb7a6af1ea04
 +}
 diff --git a/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V2843.java b/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V2843.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..6333eabb123f13495f7a828fe79c204aff9dcedd
+index 0000000000000000000000000000000000000000..69783c4ca366e4895d4f1c5909656b4f41fee3a1
 --- /dev/null
 +++ b/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V2843.java
 @@ -0,0 +1,105 @@
@@ -17052,7 +17052,7 @@ index 0000000000000000000000000000000000000000..6333eabb123f13495f7a828fe79c204a
 +                        if (outOfBounds == null) {
 +                            outOfBounds = Types.NBT.createEmptyList();
 +                        }
-+                        outOfBounds.addMap(tick);
++                        outOfBounds.addMap(tick.copy());
 +                    }
 +                }
 +