lock/greeter: keyboard accessibility improvements

Modules/Lock/CustomButtonKeyboard.qml

@@ -14,6 +14,21 @@ DankActionButton {
     property bool isShift: false
     color: Theme.surface
 
+    property bool isIcon: text === "keyboard_hide" || text === "Backspace" || text === "Enter"
+
+    DankIcon {
+        anchors.centerIn: parent
+        name: {
+            if (parent.text === "keyboard_hide") return "keyboard_hide"
+            if (parent.text === "Backspace") return "backspace"
+            if (parent.text === "Enter") return "keyboard_return"
+            return ""
+        }
+        size: 20
+        color: Theme.surfaceText
+        visible: parent.isIcon
+    }
+
     StyledText {
         id: contentItem
         anchors.centerIn: parent
@@ -21,5 +36,6 @@ DankActionButton {
         color: Theme.surfaceText
         font.pixelSize: Theme.fontSizeXLarge
         font.weight: Font.Normal
+        visible: !parent.isIcon
     }
 }