[C++] Update Automaton Base Damage Calculation

[Skold177]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

• Improves the accuracy of the automaton base damage calculation. This is a slight buff over the old one and results in roughly 3 more weapon damage at 99. (From 97 at max skill to 100)

Steps to test these changes

Check your automaton with !getstats 3, see very slightly higher weapon damage.

Capture Log

Veralice.log

This was analyzed by Jimmayus who concluded my automaton had 100 base damage, which was 3 higher than my LSB local.

[WinterSolstice8]

CI will probably complain about these on clang tidy