graphql-js

2562ce01 - Backport introspection type fix (#4226)

Backport introspection type fix (#4226) Backports #4222 Supersedes https://github.com/graphql/graphql-js/pull/3910 Fixes https://github.com/graphql/graphql-js/issues/3909 Fixes https://github.com/graphql/graphql-js/issues/3409