Render the VFO/Channel frequency (and the SK1-held frequency view, which share
uiUtilityDisplayFrequency) as 7-segment "LED" digits instead of the normal font,
on colour displays.
- HX8353E_display.c: displayDrawFrequencySevenSeg() draws each digit's 7 segments
as filled rectangles; lit segments use the theme frequency colour, inactive
segments a dimmed (~3/8 intensity, same hue) version, giving the classic LED
look with faintly-visible "off" segments. The decimal point takes half a cell.
- Digits are 12 px wide (wider than the 8 px font) to fill the space toward the
"MHz" label; height follows the existing single/double-height frequency layout.
- Monochrome displays keep the normal font.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
