With "Enable Worth the Drive" off, the MPG slider, the fill-up unit picker
and the fill-up slider stayed live — editable settings for a switched-off
feature. They now sit in a Group disabled by `enabled`, so they grey out but
stay on screen and keep their values (the same rule as the distance picker
in Closest mode), and re-enabling restores exactly what was there.
The surfaces that USE the feature were already gated on `isConfigured`
(which includes `enabled`), so the in-list fill-up control and the Worth the
Drive sort option still disappear entirely rather than greying out.
Verified on the simulator with the toggle off vs forced on: the MPG slider
row and the unit picker row both measurably dim — MPG row mean RGB
33.06/35.62/39.49 off vs 37.61/42.70/48.43 on; picker 40.00/40.00/42.62 vs
53.35/53.36/56.82 — while the toggle row itself changes as expected
(54.85/64.77/58.96 with the switch on).
FuelBoard Contributor
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