Repository: create-react-app
Issue: Hot reload not working with react-scripts v5 when site exposed via tunnel
Labels: needs triage,issue: bug report

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### Describe the bug

When serving a development site over a tunnel the hot reload fails to connect to the web socket sever. Does not appear to be related to https://github.com/facebook/create-react-app/issues/8075 as `wss` protocol is used. 

This previously worked in `4.0.3` I was upgrading to v5 as I was having trouble with `4.0.3` disconnecting from the hot reload server and followed instructions to upgrade to v5

EDIT: NB the use case for this is developing thrid-party apps that are hosted via iframe. Development site must be hosted via `https://` 


### Did you try recovering your dependencies?
No, this works with a fresh CRA build
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### Which terms did you search for in User Guide?

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NA

### Environment

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```
Environment Info:

  current version of create-react-app: 5.0.0
  running from C:\Users\phil_\AppData\Local\npm-cache\_npx\c67e74de0542c87c\node_modules\create-react-app

  System:
    OS: Windows 10 10.0.19044
    CPU: (8) x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
  Binaries:
    Node: 14.16.0 - C:\Program Files\nodejs\node.EXE
    Yarn: Not Found
    npm: 7.20.3 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: Not Found
    Edge: Spartan (44.19041.1266.0), Chromium (99.0.1150.52)
    Internet Explorer: 11.0.19041.1566
  npmPackages:
    react: ^17.0.2 => 17.0.2
    react-dom: ^17.0.2 => 17.0.2
    react-scripts: 5.0.0 => 5.0.0
  npmGlobalPackages:
    create-react-app: Not Found
```
### Steps to reproduce

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(Write your steps here:)

1. Create new app using `create-react-app`
2. Install [`localtunnel/localtunnel`](https://github.com/localtunnel/localtunnel)
3. `npm serve` on app
4. Expose site using app using localtunnel `lt -p 3000 -s create-react-app-test`
5. Navigate to https://create-react-app-test.local.lt

### Expected behavior

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App should be served and hot reloading should work

### Actual behavior

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Hot reloading does not work and fails to connect to web socket server

![image](https://user-images.githubusercontent.com/24360902/160312823-116c6707-c9d9-478b-83e1-fde50fcbf07d.png)

### Reproducible demo

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Can be reproduced by creating fresh react app `npx create-react-app my-app`

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