Theme Preferences v1.0.9

Changelog:

• [Fix] No longer render the locked the Palette icon under the unlocked Palette icon
• [Fix] Correctly scale inactive tab elements for smaller fonts
• [Fix] Correctly set selection handles colors to mirror the Cursor colors
• [Fix] Correctly set button icon colors for Transparent Color Options and Rotation Pivot
• [Improvement] Theme was updated to align with changes to the default theme up to, and including, Aseprite v1.3.17