Add subscribeToMore functionality to useQueryRefHandlers, useBackgroundQuery

[bignimbus]

Context: https://community.apollographql.com/t/how-to-use-subscriptions-together-with-preloadquery/7434/3

Some of our hooks include subscribeToMore in the results object. We want to ensure that all relevant hooks include subscribeToMore, including useQueryRefHandlers and useBackgroundQuery.

[jerelmiller]

Finished with #11923 and will be released in 3.11

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