next.js

cbf32150 - fix(turbo-tasks): Implement `TaskInput for `ResolvedVc` (#70814)

fix(turbo-tasks): Implement `TaskInput for `ResolvedVc` (#70814) `TaskInput` isn't needed/used for a bare `ResolvedVc`, as we'll expose `ResolvedVc` arguments as `Vc`, but it is useful for structs that contain `ResolvedVc` and want to derive `TaskInput`. This PR also ports `next_core::app_structure::Entrypoint` to use `ResolvedVc` as a way of testing this.