`useSubscription`: Subscribe / skip based on condition?

[`useSubscription`](https://relay.dev/docs/api-reference/use-subscription/) as of relay 13 does not have a way to skip invocation based on props passed.

Here are three options that come to mind:

1. Use [`requestSubscription`](https://relay.dev/docs/api-reference/request-subscription/)
2. Separate component. Keep the `useSubscription` there and conditionally render it
3. [relay-tools/relay-hooks](https://github.com/relay-tools/relay-hooks/)'s [`useSubscription`](https://github.com/relay-tools/relay-hooks/blob/v7.0.0/docs/useSubscription.md) w/ [`{ skip: ... }`](https://github.com/relay-tools/relay-hooks/blob/v7.0.0/__tests__/useSubscription-test.tsx#L80) support

What's the background behind `useSubsription` and having or not having `skip`? Do the best practices of hooks (in general) and relay have anything to say for or against it?

Start with the Relay 13 useSubscription API documentation and compare its behavior with requestSubscription and the separate-component approach described in the issue. Review relay-tools/relay-hooks' useSubscription documentation and __tests__/useSubscription-test.tsx for the skip option. The issue does not define a preferred behavior or acceptance criteria, so a design decision would be needed before implementation.

Written by the indexing model from the issue text.