Use new cornerRadius Kirigami unit across the app

(cherry picked from commit ab0c8b8170)

src/qml/EmojiDelegate.qml

@@ -48,10 +48,10 @@ QQC2.ItemDelegate {
 
     background: Rectangle {
         color: root.checked ? Kirigami.Theme.highlightColor : Kirigami.Theme.backgroundColor
-        radius: Kirigami.Units.smallSpacing
+        radius: Kirigami.Units.cornerRadius
 
         Rectangle {
-            radius: Kirigami.Units.smallSpacing
+            radius: Kirigami.Units.cornerRadius
             anchors.fill: parent
             color: Kirigami.Theme.highlightColor
             opacity: root.hovered && !root.pressed ? 0.2 : 0

src/qml/EmojiDialog.qml

@@ -40,7 +40,7 @@ QQC2.Popup {
     background: Kirigami.ShadowedRectangle {
         Kirigami.Theme.colorSet: Kirigami.Theme.View
         color: Kirigami.Theme.backgroundColor
-        radius: Kirigami.Units.mediumSpacing
+        radius: Kirigami.Units.cornerRadius
         shadow {
             size: Kirigami.Units.largeSpacing
             color: Qt.rgba(0.0, 0.0, 0.0, 0.3)

src/qml/EmojiTonesPicker.qml

@@ -30,7 +30,7 @@ QQC2.Popup {
     onOpened: x = Math.min(parent.mapFromGlobal(QQC2.Overlay.overlay.width - root.width, 0).x, -(width - parent.width) / 2)
     background: Kirigami.ShadowedRectangle {
         color: Kirigami.Theme.backgroundColor
-        radius: Kirigami.Units.mediumSpacing
+        radius: Kirigami.Units.cornerRadius
         shadow {
             size: Kirigami.Units.largeSpacing
             color: Qt.rgba(0.0, 0.0, 0.0, 0.3)

src/qml/TypingPane.qml

@@ -113,7 +113,7 @@ Loader {
         rightInset: mirrored ? 0 : -background.radius
         bottomInset: -background.radius
         background: Rectangle {
-            radius: 3
+            radius: Kirigami.Units.cornerRadius
             color: Kirigami.Theme.backgroundColor
             border.color: Kirigami.ColorUtils.tintWithAlpha(Kirigami.Theme.backgroundColor, Kirigami.Theme.textColor, 0.2)
             border.width: 1