uiux(Profile): theme color fixes for the contact list

The "more actions" button in the contacts list had some hard coded colors
for its hover effect which break the experience in dark mode.
This commit makes changes those so that they work universally.

ui/app/AppLayouts/Profile/Sections/Contacts/Contact.qml

@@ -56,6 +56,7 @@ Rectangle {
         anchors.verticalCenter: parent.verticalCenter
         anchors.right: parent.right
         radius: 8
+        color: "transparent"
 
         SVGImage {
             source: "../../../../img/dots-icon.svg"
@@ -72,10 +73,10 @@ Rectangle {
             anchors.fill: parent
             hoverEnabled: true
             onExited: {
-                menuButton.color = Style.current.white
+                menuButton.color = "transparent"
             }
             onEntered: {
-                menuButton.color = Style.current.grey
+                menuButton.color = Style.current.border
             }
             onClicked: {
               menuOpened = true