fix lowlevel_data

[shaorongqiang]

• make sure that you have executed all the following process and no errors occur

  • [ ] make fmt
  • [ ] make lint
  • [ ] make test

• The major changes of this PR

• The major impacts of this PR

  • [ ] Impact WASM?
  • [ ] Impact Web3 API?
  • [ ] Impact mainnet data compatibility?

• Extra documentations

[shaorongqiang]

My understanding is that originally, before the height of 3971239, it was sufficient to simply return normally when checking if the array was empty. However, due to a previous mistake, an empty array became non-empty and continued to participate in JSON serialization. Therefore, this update adds a new height of 4033522 where normal logic is restored after this point. Before the height of 3971239 there were no such checks and x==None would return true.

Yes