feat(ui/modules/Common/InvertedMouseArea): remove the limit instances of `InvertedMouseArea`

tests/ui/modules/Common/InvertedMouseArea.qml

@@ -21,16 +21,6 @@ Item {
 
   function _createMouseArea () {
     var parent = Utils.getTopParent(item, true)
-    var mouseArea = Utils.find(parent.children, function (element) {
-      return Utils.qmlTypeof(element, 'QQuickMouseArea')
-    })
-
-    Utils.assert(
-      _mouseArea === mouseArea,
-      'It already exists a different `MouseArea` at window root. (' +
-      '`local mouse area`=' + _mouseArea + ', `root mouse area`=' +
-      mouseArea + ')'
-    )
 
     if (_mouseArea == null) {
       _mouseArea = builder.createObject()

tests/ui/modules/Linphone/Chat/Message.qml

@@ -18,13 +18,14 @@ Item {
   // -----------------------------------------------------------------
 
   function _handleHoveredLink (hoveredLink) {
-    var root = Utils.getTopParent(container)
-    var children = root.children
-
     // Can be the `invertedMouseArea` of other message.
-    var mouseArea = Utils.find(children, function (element) {
+    // Or another mouse area. Dangerous?
+    var mouseArea = Utils.find(
+      Utils.getTopParent(container).children,
+      function (element) {
         return Utils.qmlTypeof(element, 'QQuickMouseArea')
-    })
+      }
+    )
 
     if (mouseArea != null) {
       mouseArea.cursorShape = hoveredLink