qml: abstract ElDialog resize behavior to property

electrum/gui/qml/components/LoadingWalletDialog.qml

@@ -13,7 +13,7 @@ ElDialog {
     title: qsTr('Loading Wallet')
     iconSource: Qt.resolvedUrl('../../icons/wallet.png')
 
-    parent: Overlay.overlay
+    resizeWithKeyboard: false
 
     x: Math.floor((parent.width - implicitWidth) / 2)
     y: Math.floor((parent.height - implicitHeight) / 2)

electrum/gui/qml/components/controls/ElDialog.qml

@@ -7,12 +7,13 @@ Dialog {
 
     property bool allowClose: true
     property string iconSource
+    property bool resizeWithKeyboard: true
 
     function doClose() {
         close()
     }
 
-    parent: Overlay.overlay.children[0]
+    parent: resizeWithKeyboard ? Overlay.overlay.children[0] : Overlay.overlay
     modal: true
     Overlay.modal: Rectangle {
         color: "#aa000000"

electrum/gui/qml/components/main.qml

@@ -264,6 +264,7 @@ ApplicationWindow
     Item {
         // Item as first child in Overlay that adjusts its size to the available
         // screen space minus the virtual keyboard (e.g. to center dialogs in)
+        // see ElDialog.resizeWithKeyboard property
         parent: Overlay.overlay
         width: parent.width
         height: inputPanel.y