All instantiations of the function body decoder (validation, Liftoff,
TurboFan) currently generate precise error messages. For Liftoff though,
the error message and location is never used. Thus we can save some
binary size and performance by only keeping a flag whether an error
occured or not. In the error case, the TurboFan compiler will execute
right afterwards anyway, generating a proper error message.

As as follow-up, we can avoid storing the pc in {ValueBase} and
{ControlBase}, because that's only used for error reporting.

R=thibaudm@chromium.org

Bug: v8:10969
Change-Id: I65c46cb9d8b654f9476f2c34ca9a8dd45d6bbbc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2436347
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70235}