fix: unmount component on destroy

app/assets/javascripts/components/utils.ts

@@ -1,4 +1,5 @@
 import { FunctionComponent, h, render } from 'preact';
+import { unmountComponentAtNode } from 'preact/compat';
 import { StateUpdater, useCallback, useState } from 'preact/hooks';
 import { useEffect } from 'react';
 
@@ -70,6 +71,9 @@ export function toDirective<Props>(
             $onChanges() {
               render(h(component, $scope), $element[0]);
             },
+            $onDestroy() {
+              unmountComponentAtNode($element[0]);
+            },
           };
         },
       ],