Opening a file via legacy-API throws AbortError

[dwelle]

Steps:

1. in Firefox, open a file that has no extension
2. instead of resolving with the Blob, it throws AbortError

sandbox: https://srzn8.csb.app/

(via https://github.com/excalidraw/excalidraw/issues/3155)

Introduced in https://github.com/GoogleChromeLabs/browser-fs-access/commit/5d8a551af106121d010c1c50ca4a15d3cb0b189d

[dwelle]

Can be hack-fixed by running the cancelDetector in a next tick, but I'd still be hesitant to call it a surefire solution:

const cancelDetector = () => {
  window.removeEventListener('focus', cancelDetector);
  requestAnimationFrame(() => {
    requestAnimationFrame(() => {
      if (input.files.length === 0) {
        reject(
          new DOMException('The user aborted a request.', 'AbortError')
        );
      }
    });
  });
};