为什么这里叫no，不应该把no-CORS-safelisted request-header name的no去掉吗？

Question

A no-CORS-safelisted request-header name is a header name that is a byte-case-insensitive match for one of

Accept
Accept-Language
Content-Language
Content-Type
To determine whether a header header is a no-CORS-safelisted request-header, run these steps:

1.If header’s name is not a no-CORS-safelisted request-header name, then return false.

2.Return whether header is a CORS-safelisted request-header.

来源：https://fetch.spec.whatwg.org/

研究了许久，猜测可能是跟RequestMode，no-cors有关