The new ToIndex() must eventually replace ToSmiIndex().

The CL fixes the following abstract operations:
  GetViewValue(view, requestIndex, isLittleEndian, type)
  SetViewValue(view, requestIndex, isLittleEndian, type, value)

and the following builtins:
  DataView.prototype.getXXX
  DataView.prototype.setXXX

where XXX are all typed elements.

Bug: v8:4153
Change-Id: Ic2f33e91b59426deb0efa28bb4c15253e80a299c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1874345
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64506}