Avoid using getBoundingClientRect to calculate height (#4001)

app/javascript/mastodon/features/ui/components/bundle.js

@@ -12,7 +12,6 @@ class Bundle extends React.Component {
     error: PropTypes.func,
     children: PropTypes.func.isRequired,
     renderDelay: PropTypes.number,
-    onRender: PropTypes.func,
     onFetch: PropTypes.func,
     onFetchSuccess: PropTypes.func,
     onFetchFail: PropTypes.func,
@@ -22,7 +21,6 @@ class Bundle extends React.Component {
     loading: emptyComponent,
     error: emptyComponent,
     renderDelay: 0,
-    onRender: noop,
     onFetch: noop,
     onFetchSuccess: noop,
     onFetchFail: noop,
@@ -43,10 +41,6 @@ class Bundle extends React.Component {
     }
   }
 
-  componentDidUpdate () {
-    this.props.onRender();
-  }
-
   componentWillUnmount () {
     if (this.timeout) {
       clearTimeout(this.timeout);