Fix wvalue::operator = (wvalue && r); Number type loss problem

[wnself]

该问题导致dump时按long格式化

This problem leads to long formatting when dump is formatted

[The-EDev]

I apologize for taking so long and changing the commit, It's just that everyone here uses English so it was best to change the commit message so we don't have to translate it every time.

Don't worry, you'll still get credit for your work in the next changelog. Thank you for your patience and help!