plugins/_browser/webui/main.html

<html
  class="browser-modal"
  data-surface-id="browser"
  data-surface-modal-path="/plugins/_browser/webui/main.html"
  data-surface-dock-title="Open Browser in canvas"
  data-surface-dock-icon="dock_to_right"
  data-canvas-surface="browser"
  data-canvas-modal-path="/plugins/_browser/webui/main.html"
  data-canvas-dock-title="Open Browser in canvas"
  data-canvas-dock-icon="dock_to_right"
>
<head>
  <title>Browser</title>
</head>
<body class="browser-modal-body">
  <x-component path="/plugins/_browser/webui/browser-panel.html" mode="modal"></x-component>
</body>
</html>