Port 787bec09

Original Commit Message:

    Remove the BaselineData intermediate structure for baseline code, and
    write the baseline Code object into the SharedFunctionInfo directly. We
    still need a pointer to the BytecodeArray/InterpreterData, so re-use the
    Code object's deoptimization data slot for this (baseline code doesn't
    have deoptimization data).

    A consequence of this is that the BytecodeArray pointer becomes
    immutable when there is baseline code. This means that we cannot install
    a debug BytecodeArray while baseline code is active (we have to flush it
    first), and we can't tier-up code with debug BytecodeArray to baseline.

R=leszeks@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I7e0f7d964341774340d27f1890cef4c7d9ee9dda
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3145171Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#76694}