Make ssrForceFetchDelay work with cache-and-network

[ciscorn]

Under SSR, we can use the ssrForceFetchDelay option to prevent the browser from issuing the same network requests that the server-side already has done.

apollo-client/packages/apollo-client/src/ApolloClient.ts

Line 122 in dde2c9c

this.disableNetworkFetches = ssrMode || ssrForceFetchDelay > 0;

However, this option currently works only with network-only:

apollo-client/packages/apollo-client/src/ApolloClient.ts

Lines 239 to 241 in dde2c9c

	if (this.disableNetworkFetches && options.fetchPolicy === 'network-only') {
	options = { ...options, fetchPolicy: 'cache-first' } as WatchQueryOptions;
	}

I think this option should also work with cache-and-network.

[apollo-cla]

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[apollo-cla]

	Fails
🚫	No CHANGELOG added.

	Warnings
⚠️	There are library changes, but not tests. That's OK as long as you're refactoring existing code

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[dastoori]

I think this PR is related to #2119. I had the same issue and I've already sent a PR (#3372) (I don't know which one is better 🤔)

[ciscorn]

@dastoori Thanks.
I missed your PR (#3372) , which is exactly same as mine.
I'll close this.