Most Torque-defined extern classes already use CPP class generation. As
Nico pointed out in [1], it would be nice to convert the remaining
classes and remove this option. This change converts most of those
remaining classes. I know that the future of Torque-defined classes is a
subject of some debate right now, but I think that it's worth doing a
few mechanical changes to reduce the existing variety of options. A
couple of minor fixes in the Torque compiler were required so that it
generates correct code for shapes.

[1] https://docs.google.com/document/d/1q_gZLnXd4bGnCx3IUfbln46K3bSs9UHBGasy9McQtHI/edit#

Bug: v8:8952
Change-Id: I7e6087153a18d6ee80e67926793e8ba8e01d501e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3015666Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#76586}