chore: use satisfies over assertUnreachable #7627
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Description
We can replace our
assertUnreachable
util with native TS via thesatisfies
operator.This PR does just that.
Ref: https://stackoverflow.com/a/75217377/5623388 and https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-9.html#the-satisfies-operator
Issue (if applicable)
N/A, developer experience.
Risk
Small - only type-level changes.
None
Testing
App should build as normal, with no errors.
Engineering
☝️
Operations
General smoke test.
Screenshots (if applicable)
N/A