fix: align object's children to keep the consistency of graph illustration

[hanbin9775]

Issue: #266

Solved the issue by aligning object type node's children with sort method.
I checked traverse function performance with performance api.

      const t0 = performance.now();
      traverse(json);
      const t1 = performance.now();
      console.log(`traverse() with sorting children took ${t1 - t0} ms`);

test data

• https://www.reddit.com/r/all.json

as-is

to-be

[hanbin9775]

Any feedback would be greatly appreciated.
cc. @AykutSarac

[AykutSarac]

Looks like it overrides the parent parameter of calculateSize function, can we merge with main branch and implement the changes then?

[hanbin9775]

Oh the reason parent parameter was overriden is that my pr was created before the #264 merge.
I will rebase based on the current main branch. Thanks for reviewing!

[hanbin9775]

Rebase done! All good to merge!