Large images are getting auto-cropped on upload

[erlend-sh]

I just got back to an article, finding that the image I had uploaded had gotten cropped. I uploaded a new image to confirm.

[bschlagel]

Hey, sorry about this one, investigate a bit but still need to figure out a fix. cc/ @jaredpereira

From what I can tell:

• prob an issue with normalizeOrientation in addImage.ts (we're doing canvas reencoding to normalize exif orientation data)
• seems based on resolution (not file size); after a certain dimension images get cropped
• not sure why exactly b/c canvas max size should be very large and this happens even with e.g. a 5712x4284 image on desktop chrome, so maybe something else or a mix of factors