Fix SSR and cache-and-network fetch policy

[dastoori]

Fix #2119

[apollo-cla]

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[dastoori]

@jbaxleyiii, can you take a look at this…

[hwillson]

Thanks for this PR @dastoori! This looks great, but I think we need a few tests in place to make sure we don't regress on this in the future. I'll get something in place, and🤞we should be able to get this into today's apollo-client release.