Input suffix removed from input type.

[Samjin]

Library Version
Any latest version of 6, 7 and upcoming 8.

Describe the bug
#1960

This PR introduces breaking changes for many services, particularly those that use shared type libraries. While a manual fix involving the addition of an Input suffix to a Kotlin class could be a solution, it is important to recognize that this would necessitate updating classes across all services within a large organization, which is not practical.

To Reproduce

@GraphQLValidObjectLocations(locations = [GraphQLValidObjectLocations.Locations.INPUT_OBJECT])
data class UriContext(){}

1. The above code compiles to UriContextInput graphql type, but now it becomes UriContext.
2. Another potential problem could arise if there is already a UriContext type.
3. Subgraph schema generates UriContext after graphql-kotlin updates, but shared type lib with older version of graphql-kotlin could still create UriContextInput.

Expected behavior

Ideally revert the PR. If not possible, can we make it configurable?

[samuelAndalon]

#2032