Resource-lifecycle and error-classification fixes in the local fetch provider:
- Classify a timeout that fires DURING the body read as WEB_FETCH_TIMEOUT, not
WEB_ABORTED: thread the controller signal into the body-read translate path
and recover the timeout WebError from signal.reason, honoring the public
WEB_FETCH_TIMEOUT contract for a stalled response body.
- Cancel the response body before every blocked-redirect throw path
(cross-origin, invalid target, missing Location), so a rejected redirect with
a large or streaming body does not leak the socket after the tool returns
WEB_REDIRECT_BLOCKED.
- Cancel the body when charset validation fails, matching the
unsupported-content-type and over-size paths (the round-1 charset check threw
before readCapped owned the stream).
Dudu-0223
a1624530ee