[BUG] `DEPRECATION WARNING: please use GetValence(Chem.ValenceType.EXPLICIT) instead`

### Bug summary I notice the CI has the following warning: ``` [07:15:17] DEPRECATION WARNING: please use GetValence(Chem.ValenceType.EXPLICIT) instead ``` ### dpdata Version latest ### Input Files, Running Commands, Error Log, etc. See the recent CI logs. ### Steps to Reproduce See the recent CI logs. ### Further Information, Files, and Links _No response_