chore(gatsby): Convert pagination to TypeScript

[alisson-suzigan]

Description

This PR converts the packages/gatsby/src/schema/types/pagination.ts file to TypeScript and its related import in the packages/gatsby/src/schema/schema.js file.

Documentation

No changes required.

Related Issues

Related to #21995

[ascorbic]

Thanks. Just a few requests

[ascorbic]

Great stuff. Thanks!

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