QuotaExceedederror is now a derived interface

[jdm]

What is the issue with the Fetch Standard?

whatwg/webidl#1465 made QuotaExceeded a derived interface that can now provide more useful information to the caller. Other specifications were updated to take advantage of this, but it seems like Fetch was overlooked.

[annevk]

I suspect those happened due to fetchLater() landing late and this getting overlooked. @noamr?

[TimvdLippe]

FWIW I opened web-platform-tests/wpt#56978 which I discovered while implementing some fixes in Servo