message: Show progress bar when loading on techdocs
diff: */
  import React from 'react';
  -import { useApi } from '@backstage/core';
  +import { useApi, Progress } from '@backstage/core';
  import { useShadowDom } from '..';
  import { useAsync } from 'react-use';
  import { techdocsStorageApiRef } from '../../api';
  @@ -131,5 +131,10 @@ export const Reader = ({ entityId }: Props) => {
  return <TechDocsNotFound />;
  }
  - return <div ref={shadowDomRef} />;
  + return (
  + <>
  + {loading ? <Progress /> : null}
  + <div ref={shadowDomRef} />
  + </>
  + );
  };
  