prefetch
suspend fun prefetchVectorTilesForGlRendering(bypassThrottle: Boolean = false, requestBudget: Int = Int.MAX_VALUE, minIntervalMs: Long = GL_PREFETCH_MIN_INTERVAL_MS, priorityIntervalMs: Long? = null)
Warms MVT cache for custom GL mesh layers when CustomGeometrySource has not yet delivered tiles for the current viewport (e.g. fire observation icons on fires_obs).