fix(routing): manually push changed path

[Haroenv]

Summary

Instead of using next's router.push function, we're transitioning back to history.pushState. This works better in many edge cases as it prevents a whole page refresh and rerender.

Result

No unexpected rerenders when changing state.

Possible intended side effect of this fix is of course that any global change handlers or code running in render won't run anymore when changing instantsearch state. This can be worked around by using the onStateChange function or a middleware.

Back navigation still works as expected.

[codesandbox-ci[bot]]

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Sandbox	Source
example-instantsearch-getting-started	Configuration
example-react-instantsearch-getting-started	Configuration
example-react-instantsearch-next-app-dir-example	Configuration
example-react-instantsearch-next-routing-example	Configuration
example-vue-instantsearch-getting-started	Configuration