FrameState parameters must not be iterated directly since parameters
can be encoded into StateValues (i.e. parameter i is not necessarily
InputAt(i)). Instead, they should be accessed through the
StateValuesAccess helper class.

One example:

 82: StateValues[sparse:^^^^^^](81, 31, 32, 33, 34, 35)
  81: StateValues[sparse:^^^^^^^^](110, 24, 25, 26, 27, 28, 29, 30)
  31: NumberConstant[8]
  32: NumberConstant[9]
  33: NumberConstant[10]
  34: NumberConstant[11]
  35: NumberConstant[13]

Here, node 81 holds multiple parameters. These are properly iterated
by the StateValuesAccess class.

Bug: chromium:1166136
Change-Id: I12725f83994e1c05571bcba153ff45154b16d93f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2625879
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72126}