Cap Liquid Glass Effect to 30FPS for reduced GPU throttling

DynamicIsland/components/LockScreen/LockScreenTimerWidget.swift

@@ -136,7 +136,7 @@ struct LockScreenTimerWidget: View {
     }
 
     private var customLiquidBackground: some View {
-        TimelineView(.animation) { context in
+        TimelineView(.periodic(from: .now, by: 1.0 / 30.0)) { context in
             LiquidGlassBackground(variant: timerGlassVariant, cornerRadius: Self.cornerRadius, trigger: context.date.timeIntervalSinceReferenceDate) {
                 Color.black.opacity(0.12)
             }