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Closes #11602.
This PR adds memoization around the Apollo Client and its dependencies to prevent new clients being instantiated each time the provider is re-rendered. The only time a client will reinstantiate now is when the configuration has been modified.
If a client is reinstantiated, the previous client is now stopped to prevent a potential memory leak.
Note: The links that the client uses right now are unstable and were purposefully left out of the dependency array. Making links stable will require more effort that may not be necessary since the solution provided still updates them in a
useEffect
.