- Remove BodyClassHook: use CSS :has() selectors on data-map-page attribute
instead of JS toggling body.map-page class
- Remove ResponsiveSlideoverHook: pass viewport_width via LiveSocket connect
params and determine initial slideover state server-side
- Convert theme selector from data-set-theme attributes with DOMContentLoaded
listeners to JS.dispatch("phx:set-theme") with a single event handler
- Fix buggy reRenderAllCharts that incorrectly used `new MapAPRSMap()` as a
Map constructor; charts now re-render via themeChanged event directly
