Treat `307` and `308` as redirects in HTTPS imports

[kidonng]

What is the problem this feature will solve?

Quoting #36328 (comment):

We should probably think of adding support for HTTP status code 307 and 308 at some point.

What is the feature you are proposing to solve the problem?

Per RFC 7231 and 7238, HTTP 307 and 308 status code are also for redirect responses.

What alternatives have you considered?

N/A

[aduh95]

Would you like to send a PR to address this?

[hemanth]

I came it bit late on this. Does this look good?

[LiviaMedeiros]

@hemanth Yes, your approach also looks good. However, the code is about fetching modules (i.e. importing over network), not about fetch. This makes test changes unrelated to this issue, but they could still be useful as generic test improvement.

[hemanth]

Ah, HTTPS imports. Can we emulate them as well?