Don't add block entity tag if the id is missing

common/src/main/java/com/viaversion/viaversion/protocols/v1_20_3to1_20_5/rewriter/BlockItemPacketRewriter1_20_5.java

@@ -488,8 +488,12 @@ public final class BlockItemPacketRewriter1_20_5 extends ItemRewriter<Clientboun
         if (blockEntityTag != null) {
             final CompoundTag clonedTag = blockEntityTag.copy();
             updateBlockEntityTag(connection, data, clonedTag);
+
+            // Not always needed, e.g. shields that had the base color in a block entity tag before
+            if (blockEntityTag.contains("id")) {
                 item.dataContainer().set(StructuredDataKey.BLOCK_ENTITY_DATA, clonedTag);
             }
+        }
 
         final CompoundTag debugProperty = tag.getCompoundTag("DebugProperty");
         if (debugProperty != null) {