schedule
open override fun schedulePrefetchGlStencilMaskTilesForWeatherRender(coords: List<TileCoord>, maskKind: MaskLayerKind, countryIso3166Alpha2: String?)
Queues GL-stencil mesh prefetch for the weather tile coords currently being rendered under maskKind (and countryIso3166Alpha2 for MaskLayerKind.COUNTRY), then kicks off runGlStencilPrefetchWorker. Tiles that already have a renderable mesh are skipped unless a transportation zoom-bin change forces a visible-tile refresh at the new stroke width.