try to solve nested drag handles

docs/src/demos/Examples/NodeView/Component.vue

@@ -1,5 +1,5 @@
 <template>
-  <node-view-wrapper>
+  <node-view-wrapper style="padding-left: 1rem">
     <button @click="toggleChecked" contenteditable="false">
       toggle checked
     </button>

docs/src/demos/Examples/NodeView/Test.ts

@@ -7,11 +7,12 @@ export default Node.create({
 
   group: 'block',
 
-  content: 'inline*',
+  // content: 'inline*',
+  content: 'block*',
 
   draggable: true,
 
-  selectable: false,
+  selectable: true,
 
   addAttributes() {
     return {

docs/src/demos/Examples/NodeView/index.vue

@@ -36,7 +36,10 @@ export default {
       content: `
         <p>paragraph</p>
         <div data-type="test">
-          text
+          one
+          <div data-type="test">
+            two
+          </div>
         </div>
         <p>paragraph</p>
       `,