Does not import any images, nor canvases behind auth walls

**Describe the bug**
I download a .json file via the Chrome extension from a page behind an auth wall.
When I imported it to Figma all the images and canvas data on the web page is displayed as a grey box.

**Expected behavior**
When the extension detects that images are behind an auth wall, they are integrated into the JSON file (e.g. as base64 data URLs).

**Screenshots**
If applicable, add screenshots to help explain your problem.
(no, the image data isn't available "behind" that upload button)

**Additional context**
I took a look at the JSON.
The image URLs are noted therein, but if they're behind an auth wall, that's obviously not making any sense.
Inline SVGs were imported though.
I wouldn't mind if the plugin wouldn't do any checks, but would just have have an [option](https://developer.chrome.com/docs/extensions/mv3/options/) which includes all images as base64 data URLs without additional network fetches (they're probably not as simple to implement).