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* Fix: useId in strict mode In strict mode, `renderWithHooks` is called twice to flush out side effects. Modying the tree context (`pushTreeId` and `pushTreeFork`) is effectful, so before this fix, the tree context was allocating two slots for a materialized id instead of one. To address, I lifted those calls outside of `renderWithHooks`. This is how I had originally structured it, and it's how Fizz is structured, too. The other solution would be to reset the stack in between the calls but that's also a bit weird because we usually only ever reset the stack during unwind or complete. * Add test for render phase updates Noticed this while fixing the previous bug