restore readAfterUpdate and leave TODO

Author: aviatesk

lib/plots/canopy.js

@@ -196,6 +196,12 @@ export class Pannable extends Etch {
     </div>;
   }
 
+  // TODO: merge duplicated definitions on L98
+  readAfterUpdate () {
+    this.containerRect =
+      this.element.getElementsByClassName('ink-pannable')[0].getBoundingClientRect()
+  }
+
   teardown () {
     if (this.item && this.item.teardown) this.item.teardown()
     etch.update(this)