STACK_URL_RE only matched `https?://` URLs, so extension URLs
(`chrome-extension://`, `moz-extension://`, `safari-web-extension://`)
never reached the EXTENSION_URL_RE classifier. The `fromExtension`
flag was effectively always false and extension-originated cookie
and storage activity was misattributed as `script`.
Broaden STACK_URL_RE to also match the three extension schemes so
the existing classifier branch fires and sets `fromExtension = true`
before the URL parsing path runs.
Signed-off-by: Émile Ré <emile@probo.com>
8ff68798fb