Draft: [graphql] Fix resolver type connections

What does this MR do and why?

In 2.x of the graphql gem, the determination of whether a field considers itself is a connection has changed from

https://github.com/rmosolgo/graphql-ruby/blob/c4778ffcba5de34b05dfe1b63ce94a60201a5625/lib/graphql/schema/field.rb#L128-143

to

https://github.com/rmosolgo/graphql-ruby/blob/875575c145c01666a22bba4b9c1152c53d408473/lib/graphql/schema/field.rb#L129-144

By default, the new code looks at the @resolver_class.type. The changed files are expected to return a paginated connection, but if connection? is not detecting it properly, then the necessary pagination class is not added.

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