improve option "Hide Background when not needed"

--when option "Hide Background when not needed" is
used on its own activates or not the forceTransparentPanel
code path. So when that option is enabled and any
window is touching the Latte::View then the force
transparency codepath should be disabled. In such
case the user background settings are applied.

BUG:414071
FIXED-IN:0.9.5

containment/package/contents/ui/main.qml

@@ -143,7 +143,7 @@ Item {
                                          && Latte.WindowSystem.compositingActive
                                          && !inConfigureAppletsMode
                                          && !forceSolidPanel
-                                         && !(windowColors === Latte.Types.TouchingWindowColors && latteView.windowsTracker.currentScreen.activeWindowTouching)
+                                         && !latteView.windowsTracker.currentScreen.existsWindowTouching
                                          && !(windowColors === Latte.Types.ActiveWindowColors && selectedWindowsTracker.existsWindowActive)
 
     property bool forcePanelForBusyBackground: userShowPanelBackground && (root.themeColors === Latte.Types.SmartThemeColors)

shell/package/contents/configuration/pages/AppearanceConfig.qml

@@ -825,7 +825,7 @@ PlasmaComponents.Page {
                     enabled: Latte.WindowSystem.compositingActive
 
                     PlasmaComponents.Label {
-                        text: plasmoid.configuration.backgroundOnlyOnMaximized ?
+                        text: plasmoid.configuration.backgroundOnlyOnMaximized && plasmoid.configuration.solidBackgroundForMaximized ?
                                   i18nc("opacity when desktop background is busy from contrast point of view","Busy Opacity") : i18n("Opacity")
                         horizontalAlignment: Text.AlignLeft
                         enabled: transparencySlider.enabled