Revert "[ptr-compr] Introduce BoundedPageAllocator and use it instead of CodeRange."

This reverts commit 16816e53.

Revert "[cleanup] Introduce LsanPageAllocator decorator"

This reverts commit 0606bf91.

Revert "[ptr-compr][heap] Fix TODOs about always using proper page allocator"

This reverts commit b0edf8e6.

The fist CL in the list is suspected to block the roll:
https://chromium-review.googlesource.com/c/chromium/src/+/1216022

Pseudo bisect points to that CL:
https://chromium-review.googlesource.com/c/chromium/src/+/1219612

TBR=ishell@chromium.org

Bug: v8:8096
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I9fafedd3810e14cdfc2068df7727cf90fc0cc85a
Reviewed-on: https://chromium-review.googlesource.com/1219695
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55818}