fix: About version label QML arg() chaining (1.0.5 pkgrel 5)

QML string arg() accepts one placeholder at a time; passing two arguments
at once caused "String.arg(): Invalid arguments" on AboutDialog load.

PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Sebastian Palencsar <moin@nerdbear.de>
 pkgname=bearwave-git
 pkgver=1.0.5
-pkgrel=4
+pkgrel=5
 pkgdesc="KDE-focused desktop internet radio app"
 arch=('x86_64')
 url="https://github.com/spalencsar/bearwave"

src/qml/Main.qml

@@ -24,8 +24,8 @@ ApplicationWindow {
 
     property var currentPage: "top"
     property var backend: (typeof radioBackend !== "undefined" ? radioBackend : null)
-    readonly property string appVersion: (typeof bearwaveVersion !== "undefined" ? bearwaveVersion : Qt.application.version)
-    readonly property string appBuildId: (typeof bearwaveBuildId !== "undefined" ? bearwaveBuildId : "?")
+    readonly property string appVersion: (typeof bearwaveVersion !== "undefined" ? ("" + bearwaveVersion) : Qt.application.version)
+    readonly property string appBuildId: (typeof bearwaveBuildId !== "undefined" ? ("" + bearwaveBuildId) : "?")
     property bool compactMode: width < 780
     property real contentOpacity: 1.0
     property string activeQuickFilter: ""

src/qml/components/AboutDialog.qml

@@ -55,7 +55,7 @@ Dialog {
 
             Label {
                 Layout.alignment: Qt.AlignHCenter
-                text: qsTr("Version %1 · build %2").arg(String(root.appVersion), String(root.buildId))
+                text: qsTr("Version %1 · build %2").arg(root.appVersion).arg(root.buildId)
                 color: BearTheme.textMuted
                 font.pixelSize: 12
             }