fix(graphcache): Replace selection iterator implementation for JSC memory reduction

[kitten]

Related to #3690
Related to 0no-co/graphql.web#33

Summary

Attempt to get JSC memory usage under control by dropping the nested anonymous-function based iterator implementation with one with a manual stack. This has also been updated to use a class in the hopes of getting JSC to drop memory used by the iterator faster and reduce overall usage.
In testing, JSC seems to hang on to a large amount of scope memory due to the prior implementation.

Note

Synthetic benchmarks are currently not present anymore (TBD). Browser benchmarks don't run anymore. Tests are currently broken for individual packages. In theory, however, we should be able to use Tachometer + Webdriver Safari to run the browser benchmarks on JSC to get comparative numbers.

Set of changes

• Replace makeSelectionIterator with new stack-based implementation

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🦋 Changeset detected

Latest commit: e191b9f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@urql/exchange-graphcache	Patch

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