"blocking" missing from dispatcher type definition

[xconverge]

Bug Description

a blocking flag was added in https://github.com/nodejs/undici/pull/1034/files but was not added to https://github.com/nodejs/undici/blob/main/types/dispatcher.d.ts

I am not super clear on what this flag does/prevents/changes but wanted to try it for a long running request I am having issues with

Reproducible By

Examination

Expected Behavior

Type should exist

[xconverge]

I can open a PR if its just adding the one line to the file? But I was also wondering if I could get a sentence on what this is doing, if the comment in the docs is accurate then I am good

* **blocking** `boolean` (optional) - Default: `false` - Whether the response is expected to take a long time and would end up blocking the pipeline. When this is set to `true` further pipelining will be avoided on the same connection until headers have been received.

[mcollina]

the comment on the doc is accurate