Only rewrite pages in written book

common/src/main/java/com/viaversion/viaversion/protocols/protocol1_20_3to1_20_2/rewriter/BlockItemPacketRewriter1_20_3.java

@@ -142,7 +142,7 @@ public final class BlockItemPacketRewriter1_20_3 extends ItemRewriter<Clientboun
         }
 
         final CompoundTag tag = item.tag();
-        if (tag != null) {
+        if (tag != null && item.identifier() == 1047) { // Written book
             updatePages(tag, "pages");
             updatePages(tag, "filtered_pages");
         }

common/src/main/java/com/viaversion/viaversion/util/ComponentUtil.java

@@ -81,7 +81,7 @@ public final class ComponentUtil {
     }
 
     public static @Nullable JsonElement convertJson(@Nullable final String json, final SerializerVersion from, final SerializerVersion to) {
-        return json != null ? convert(from, to, from.jsonSerializer.deserialize(json)) : null;
+        return json != null ? convert(from, to, from.jsonSerializer.deserializeReader(json)) : null;
     }
 
     private static JsonElement convert(final SerializerVersion from, final SerializerVersion to, final ATextComponent component) {