Merge pull request #6996 from OpportunityLiu/fix/5760

fix getFullTransformMatrix in shadow DOM

Author: archmoj

draftlogs/6996_fix.md

@@ -0,0 +1,2 @@
+- Fix `getFullTransformMatrix` in shadow DOM [[#6996](https://github.com/plotly/plotly.js/pull/6996)],
+  with thanks to @OpportunityLiu for the contribution!

src/lib/dom.js

@@ -134,6 +134,9 @@ function getElementAndAncestors(element) {
     while(isTransformableElement(element)) {
         allElements.push(element);
         element = element.parentNode;
+        if(typeof ShadowRoot === 'function' && element instanceof ShadowRoot) {
+            element = element.host;
+        }
     }
     return allElements;
 }