refactor(Settings): Rename fullscreen properties to overlay layer for consistency

- Updated property names from `showOverFullscreen` to `useOverlayLayer` across various components.
- Fixed Darken Modal Overlay in Standalone mode

quickshell/Common/SettingsData.qml

@@ -449,7 +449,7 @@ Singleton {
     property bool dankLauncherV2UnloadOnClose: false
     property bool dankLauncherV2IncludeFilesInAll: false
     property bool dankLauncherV2IncludeFoldersInAll: false
-    property bool launcherShowOverFullscreen: false
+    property bool launcherUseOverlayLayer: false
     property string launcherStyle: "full"
 
     property string _legacyWeatherLocation: "New York, NY"
@@ -607,7 +607,7 @@ Singleton {
     property bool showDock: false
     property bool dockAutoHide: false
     property bool dockSmartAutoHide: false
-    property bool dockShowOverFullscreen: false
+    property bool dockUseOverlayLayer: false
     property bool dockGroupByApp: false
     property bool dockRestoreSpecialWorkspaceOnClick: false
     property bool dockOpenOnOverview: false
@@ -788,7 +788,7 @@ Singleton {
             "popupGapsAuto": true,
             "popupGapsManual": 4,
             "maximizeDetection": true,
-            "showOverFullscreen": false,
+            "useOverlayLayer": false,
             "scrollEnabled": true,
             "scrollXBehavior": "column",
             "scrollYBehavior": "workspace",

quickshell/Common/settings/SettingsSpec.js

@@ -213,7 +213,7 @@ var SPEC = {
     dankLauncherV2UnloadOnClose: { def: false },
     dankLauncherV2IncludeFilesInAll: { def: false },
     dankLauncherV2IncludeFoldersInAll: { def: false },
-    launcherShowOverFullscreen: { def: false },
+    launcherUseOverlayLayer: { def: false },
     launcherStyle: { def: "full" },
 
     useAutoLocation: { def: false },
@@ -333,7 +333,7 @@ var SPEC = {
     showDock: { def: false },
     dockAutoHide: { def: false },
     dockSmartAutoHide: { def: false },
-    dockShowOverFullscreen: { def: false },
+    dockUseOverlayLayer: { def: false },
     dockGroupByApp: { def: false },
     dockRestoreSpecialWorkspaceOnClick: { def: false },
     dockOpenOnOverview: { def: false },
@@ -497,7 +497,7 @@ var SPEC = {
             popupGapsAuto: true,
             popupGapsManual: 4,
             maximizeDetection: true,
-            showOverFullscreen: false,
+            useOverlayLayer: false,
             scrollEnabled: true,
             scrollXBehavior: "column",
             scrollYBehavior: "workspace",