Fix: Fix the Ewald force and stress when atom number of some elements are zero.

[sunliang98]

Reminder

• Have you linked an issue with this pull request?
• Have you added adequate unit tests and/or case tests for your pull request?
• Have you noticed possible changes of behavior below or in the linked issue?
• Have you explained the changes of codes in core modules of ESolver, HSolver, ElecState, Hamilt, Operator or Psi? (ignore if not applicable)

Linked Issue

Fix #5672

Unit Tests and/or Case Tests for my changes

• An intergrate test 123_PW_zero_atom is added.

What's changed?

• Fix the Ewald force and stress when atom number of some elements are zero.
• When atom number of some elements are zero, we output a warning:
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  Warning: atom number is 0 for atom type: Al
  If you are confident that this is not a mistake, please ignore this warning.
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
• When the total number of atom is zero, we warning and quit.

Any changes of core modules? (ignore if not applicable)

• Example: I have added a new virtual function in the esolver base class in order to ...