Devextreme templates are not working while using the bundling technique mentioned in issue #84

Bug Report

Devextreme templates in DxDatarid and DxList are not working when they are used as per repository examples or Devextreme Site Demos presented with 19.1.3 release. Sometimes they end up showing template name itself. When we use functions to render templates They work fine. This is not ideal when you are writing lots of javascript already.

Code Sample: https://github.com/srinath999/devextreme-vue-issues/tree/dx-template-demo

**Package versions: ** They are mentioned in https://github.com/srinath999/devextreme-vue-issues/blob/dx-template-demo/package.json

Steps to reproduce: run npm run build and then npm run serve in the code sample

Expected behavior: Templates should render seamlessly.

[LexDX]

As a temporary workaround, use the following syntax to create templates:

<dx-list :items="items" :itemTemplate="itemTemplate">
</dx-list>

new Vue({
  el: "#app",
  data: {
    items: [1, 2, 3, 4, 5, 6, 7],
    itemTemplate: function(data,index,element) {
      var elt=document.createElement("DIV");
      elt.innerText=data;
      element.append(elt);
    }
});

[srinath999]

link #84