brightness: optimistically update OSDs, works better

Modules/ControlCenter/Widgets/BrightnessSliderRow.qml

@@ -148,16 +148,28 @@ Row {
         enabled: DisplayService.brightnessAvailable && targetDeviceName.length > 0
         minimum: {
             if (!targetDevice) return 1
+            const isLogarithmic = SessionData.getBrightnessLogarithmic(targetDevice.id)
+            if (isLogarithmic) {
+                return 1
+            }
             return (targetDevice.class === "backlight" || targetDevice.class === "ddc") ? 1 : 0
         }
         maximum: {
             if (!targetDevice) return 100
+            const isLogarithmic = SessionData.getBrightnessLogarithmic(targetDevice.id)
+            if (isLogarithmic) {
+                return 100
+            }
             return targetDevice.displayMax || 100
         }
         value: targetBrightness
         showValue: true
         unit: {
             if (!targetDevice) return "%"
+            const isLogarithmic = SessionData.getBrightnessLogarithmic(targetDevice.id)
+            if (isLogarithmic) {
+                return "%"
+            }
             return targetDevice.class === "ddc" ? "" : "%"
         }
         onSliderValueChanged: function (newValue) {