In Ember.js how do you extend a component and trigger an action on did-insert?

Our project is currently using Ember 3.12 and we are trying to upgrade to using Ember 3.20, but we are having an issue with extending an ember-power-select component (which now uses Glimmer components). In our extended component we need to call a method when the component is inserted and have access to component element, which we did using didInsertElement in Ember 3.12, but we now need to use a did-insert modifier. However, when we create a template file of our own which contains an element which triggers the did-insert modifier the power-select element is not displayed (because our template file has replaced it). I would rather not copy the entire contents of the power-select.hbs file into our own file and wrap it in a div that contains the did-insert modifier so that we can get access the component element in the action. Is there a pattern for this situation? Like templates can now be extended or there is another way to trigger an action when the component is inserted (and still get access to the component's element)?