message: Fix `fix-view-file-link-in-pr` in PR from forked repos
  Fixes
diff: @@ -21,12 +21,15 @@ function handleMenuOpening(event: DelegateEvent): void {
  return;
  }
  - const branch = select('.head-ref + span clipboard-copy')!.getAttribute('value')!;
  + // Looks like `https://github.com/kidonng/refined-github/tree/fix-console-error`
  + const branchPathnameParts = select<HTMLAnchorElement>('.head-ref a')!.pathname.split('/');
  + branchPathnameParts[3] = 'blob'; // This replaces `tree`
  + // Looks like `https://github.com/sindresorhus/refined-github/blob/cddac8d7e158c336552aa694a4698d4764754b64/source/features/embed-gist-via-iframe.tsx`
  const viewFile = select<HTMLAnchorElement>('[data-ga-click^="View file"]', dropdown)!;
  - const pathnameParts = viewFile.pathname.split('/');
  - pathnameParts[4] = branch;
  - viewFile.pathname = pathnameParts.join('/');
  + const viewFilePathnameParts = viewFile.pathname.split('/');
  + viewFilePathnameParts.splice(0, 5, ...branchPathnameParts); // Replaces `user/repo/blob/sha` with `forkuser/repo/blob/branch`
  + viewFile.pathname = viewFilePathnameParts.join('/');
  }
  function init(): void {
  