fix(fetch): correct 'navigator' typo to 'navigate' in fetchFinale (#5044)

The condition in step 7 of fetchFinale checked
`fetchParams.request.mode !== 'navigator'`, but 'navigator' is not a
valid request mode — the spec value is 'navigate'. Because the typo
never matched, the guarded block always ran, setting responseStatus
and extracting the MIME type even for navigate-mode responses with
cross-origin redirects, which the spec requires to be skipped.

Signed-off-by: Nikita Skovoroda <chalkerx@gmail.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Nikita Skovoroda <chalkerx@gmail.com>

Author: 3 people

lib/web/fetch/index.js

@@ -1025,7 +1025,7 @@ function fetchFinale (fetchParams, response) {
       let responseStatus = 0
 
       // 7. If fetchParams’s request’s mode is not "navigate" or response’s has-cross-origin-redirects is false:
-      if (fetchParams.request.mode !== 'navigator' || !response.hasCrossOriginRedirects) {
+      if (fetchParams.request.mode !== 'navigate' || !response.hasCrossOriginRedirects) {
         // 1. Set responseStatus to response’s status.
         responseStatus = response.status