refactor: port to KConfig and KCMLauncher

Similar to [1].

[1] https://invent.kde.org/plasma/kscreen/-/commit/f6490b96

plasma-integration/plasmoid/package/contents/ui/main.qml

@@ -30,6 +30,9 @@ import org.kde.plasma.plasma5support 2.0 as P5Support
 import org.kde.kquickcontrolsaddons 2.0
 import org.kde.kirigami 2.20 as Kirigami
 
+import org.kde.config as KConfig // KAuthorized.authorizeControlModule
+import org.kde.kcmutils // KCMLauncher
+
 import org.kwinft.private.kdisplay 1.0
 
 PlasmoidItem {
@@ -40,7 +43,7 @@ PlasmoidItem {
     toolTipSubText: presentationModeEnabled ? i18n("Presentation mode is enabled") : ""
 
     readonly property string kcmName: "kcm_kdisplay"
-    readonly property bool kcmAllowed: KCMShell.authorize(kcmName + ".desktop").length > 0
+    readonly property bool kcmAllowed: KConfig.KAuthorized.authorizeControlModule(kcmName)
 
     readonly property bool presentationModeEnabled: presentationModeCookie > 0
     property int presentationModeCookie: -1
@@ -96,7 +99,7 @@ PlasmoidItem {
         text: i18n("Configure Display Settings…")
         icon.name: "preferences-desktop-display"
         visible: kcmAllowed
-        onTriggered: KCMShell.openSystemSettings(kcmName)
+        onTriggered: KCMLauncher.openSystemSettings(kcmName)
     }
 
     Component.onCompleted: {

plasma-integration/po/plasma_applet_org.kwinft.kdisplay.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-02-26 15:23+0100\n"
+"POT-Creation-Date: 2024-02-26 15:24+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -102,12 +102,12 @@ msgid ""
 "display device plugged in."
 msgstr ""
 
-#: plasma-integration/plasmoid/package/contents/ui/main.qml:40
+#: plasma-integration/plasmoid/package/contents/ui/main.qml:43
 #, kde-format
 msgid "Presentation mode is enabled"
 msgstr ""
 
-#: plasma-integration/plasmoid/package/contents/ui/main.qml:96
+#: plasma-integration/plasmoid/package/contents/ui/main.qml:99
 #, kde-format
 msgid "Configure Display Settings…"
 msgstr ""