fix pixelation of colorized dock icons

Author: notiant

Modules/Dock/DockContent.qml

@@ -584,6 +584,7 @@ Item {
 
                 // Apply dock-specific colorization shader only to non-focused apps
                 layer.enabled: !appButton.isActive && Settings.data.dock.colorizeIcons
+                layer.smooth: true
                 layer.effect: ShaderEffect {
                   property color targetColor: Settings.data.colorSchemes.darkMode ? Color.mOnSurface : Color.mSurfaceVariant
                   property real colorizeMode: 0.0 // Dock mode (grayscale)