fix(css): add consistency to css variables for statblocks

[natowb]

Pull Request Description

after #366 was merged I noticed a few other discrepancies so decided to handle them as well.

Changes Proposed

• [x] --active--property-name-font-color now uses --statblock-property-name-font-color
• [x] --active--section-heading-border-color now uses --statblock-section-heading-font-color
• [x] Trait property names now use the --active--property-name-font-color which matches current fate-core behavior as well

Related Issues

N/A

Checklist

• [x] I have read the contribution guidelines and code of conduct.
• [x] I have tested the changes locally and they are working as expected.
• [x] I have added appropriate comments and documentation for the code changes.
• [x] My code follows the coding style and standards of this project.
• [x] I have rebased my branch on the latest main (or master) branch.
• [x] All tests (if applicable) have passed successfully.
• [x] I have run linters and fixed any issues.
• [x] I have checked for any potential security issues or vulnerabilities.

Screenshots (if applicable)

Property name use css variable changes

:root {
    --statblock-property-name-font-color: var(--dark0);
}

Before	After

Trait property name changes

:root {
    --statblock-property-name-font-color: var(--dark0);
}

Before	After

Section heading css variable changes :root { --statblock-section-heading-font-color: var(--dark0); }

Before	After

Additional Notes

N/A

[natowb]

hey @valentine195 how would you feel with me adding a css variable that allow you to modify the font color of the table header. ie alongside --statblock-table-header-font-weight creating a --statblock-table-header-font-color so that the ability names can be changed.

didnt want to add that to this PR as its creating new variables.

[valentine195]

Yeah, that's a good idea.

[natowb]

Yeah, that's a good idea.

ok cool, ill work on that on a separate branch won't be included with this PR