Move palette to syncstate

It should be there, since that is the only place it's being used

CURA-7418

resources/qml/Account/SyncState.qml

@@ -13,6 +13,11 @@ Row // sync state icon + message
     anchors.horizontalCenter: parent.horizontalCenter
     spacing: UM.Theme.getSize("narrow_margin").height
 
+    SystemPalette
+    {
+        id: palette
+    }
+
     UM.RecolorImage
     {
         id: icon

resources/qml/Account/UserOperations.qml

@@ -11,11 +11,6 @@ Column
 {
     spacing: UM.Theme.getSize("default_margin").height
 
-    SystemPalette
-    {
-        id: palette
-    }
-
     Label
     {
         id: title