Prevent duplicate registers in interface descriptor parameter lists.

Change-Id: I160ada37f0d8308dd42a37b68fbf7c2d71ed8c8b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2642255Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72248}