Fix focus issues after dismissal of consecutive dialogs (like Add PC -> Add PC error)

app/gui/NavigableDialog.qml

@@ -2,27 +2,16 @@ import QtQuick 2.0
 import QtQuick.Controls 2.2
 
 Dialog {
-    property Item originalFocusItem
-
     parent: overlay
 
     x: Math.round((parent.width - width) / 2)
     y: Math.round((parent.height - height) / 2)
 
-    onAboutToShow: {
-        originalFocusItem = window.activeFocusItem
-    }
-
-    onOpened: {
-        // Force focus on the dialog to ensure keyboard navigation works
-        forceActiveFocus()
-    }
-
-    onClosed: {
+    onAboutToHide: {
         // We must force focus back to the last item for platforms without
         // support for more than one active window like Steam Link. If
         // we don't, gamepad and keyboard navigation will break after a
         // dialog appears.
-        originalFocusItem.forceActiveFocus()
+        stackView.forceActiveFocus()
     }
 }

app/gui/NavigableMessageDialog.qml

@@ -7,11 +7,16 @@ import SystemProperties 1.0
 NavigableDialog {
     id: dialog
 
-    property alias text: dialogTextControl.dialogText
+    property alias text: dialogLabel.dialogText
 
     property string helpText
     property string helpUrl : "https://github.com/moonlight-stream/moonlight-docs/wiki/Troubleshooting"
 
+    onOpened: {
+        // Force keyboard focus on the label so keyboard navigation works
+        dialogLabel.forceActiveFocus()
+    }
+
     RowLayout {
         spacing: 10
 
@@ -29,10 +34,9 @@ NavigableDialog {
         Label {
             property string dialogText
 
-            id: dialogTextControl
+            id: dialogLabel
             text: dialogText + (SystemProperties.hasBrowser ? (" " + helpText) : "")
             wrapMode: Text.WordWrap
-            focus: true
 
             // Cap the width so the dialog doesn't grow horizontally forever. This
             // will cause word wrap to kick in.

app/gui/main.qml

@@ -424,6 +424,11 @@ ApplicationWindow {
 
         standardButtons: Dialog.Ok | Dialog.Cancel
 
+        onOpened: {
+            // Force keyboard focus on the textbox so keyboard navigation works
+            editText.forceActiveFocus()
+        }
+
         onAccepted: {
             if (editText.text) {
                 ComputerManager.addNewHost(editText.text, false)