Doesn't support streaming response

[lili21]

Describe the bug

the streaming response doesn't return immediately. Instead it wait for 3 seconds.

Link to the blitz that caused the error

https://stackblitz.com/edit/node-tzulpt?file=app%2Froutes%2Fstreaming-ssr-route2-multiple-api-calls.tsx,app%2Fentry.client.tsx,app%2Fentry.server.tsx,package.json,app%2Froutes%2Fstreaming-ssr-route1-one-api-call.tsx

Steps to reproduce

1. click the second link
2. wait for the response

Expected behavior

it should response without delay.

Parity with Local

• I have run the project in my local machine and I could not reproduce the issue.

Screenshots

No response

Platform

Browser name  = Chrome
Full version  = 108.0.0.0
Major version = 108
navigator.appName = Netscape
navigator.userAgent = Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
performance.memory = {
  "totalJSHeapSize": 118357675,
  "usedJSHeapSize": 114750103,
  "jsHeapSizeLimit": 2172649472
}
Hash = 6ebe18b1e1db1833797e3e4eb6ff802c375ee61b

Additional context

No response

[d3lm]

This is possibly a duplicate of #966.

[Nemikolh]

Hey @lili21 ! We have now support for HTTP streaming and have fixed an issue with our runtime breaking hydration which means that your second link now works as expected. 🎉