Merge pull request #12575 from ywxzm/v3

fix onTouch begin don't return value

cocos/scripting/lua-bindings/script/framework/extends/LayerEx.lua

@@ -43,7 +43,7 @@ function Layer:onTouch(callback, isMultiTouches, swallowTouches)
             event.x = args[1]
             event.y = args[2]
         end
-        callback(event)
+        return callback( event )
     end, isMultiTouches, 0, swallowTouches)
     self:setTouchEnabled(true)
     return self