Support redirects in playback gating webhooks (should we?)

**Describe the bug (required)** A clear and concise description of what the bug
is.

Token gating playback is not working when using the recommended SRT and RTMP URL in docs.
This is working for one account but not another account even when new streams were created.

**Expected behavior (required)** A clear and concise description of what you
expected to happen.

Expect to see the stream when providing the playback URL in a test player or other video players.

**To Reproduce (required)** Steps to reproduce the behavior:

playback URL: https://playback.livepeer.engineering/hls/24f4u5g8hkbgnt1a/index.m3u8

**Device (required):**

- Device: MacBook Pro
- OS: macOS Monterey
- Browser Safari/Chrome
- Version 15.5 (17613.2.7.1.8)/1.40.113 Chromium: 103.0.5060.114

**Screenshots (optional)** If applicable, add screenshots to help explain your
problem.

**Console logs (optional)**

```
Paste related logs and/or error messages from the console here.
Network issues, such as the cURL output from failing requests, can also be pasted here.
```

**Additional context (optional)** Add any other context about the problem here.

Start by reproducing the supplied playback URL for the affected account and comparing it with the account where it works. Trace the playback-gating webhook request and determine how redirects are handled; done should identify the cause and verify the expected playback behavior.

Written by the indexing model from the issue text.