Introspection produces unexpected results after upgrading to 1.2.0-rc.1

[oliversalzburg]

Describe the Bug
After upgrading to 1.2.0-rc.1, when GraphQL Playground runs an introspection query, it will complain about input types that have no fields.

To Reproduce
Create an input type where all fields are deprecated.

Expected Behavior
The deprecated fields are returned, the introspection succeeds and GraphQL Playground is able to operate normally.

Environment (please complete the following information):

• OS: Windows WSL
• Node 16.x
• Package version 1.2.0-rc.1
• TypeScript version 4.5.4

Additional Context
From what I understand, this is likely caused by the graphql-js upgrade. I found graphql/graphql-js#2834 which hints at this issue. I found no way how to affect this behavior from type-graphql itself.

[MichalLytek]

this is likely caused by the graphql-js upgrade

Please try to reproduce it with v1.1.1 and graphql-js@15.8.0.

If so, then report it in the graphql-js repo as it's now caused by type-graphql itself.
If you think it is, then propose a solution to fix it 😉