... to globals.h. The latter is included into flags.h and thus
the flag-defnitions.h can rely on those values to be defined.
The xxx_BOOL macros that were used in #if expressions in
flag-definitions.h are now explicitly checked for being defined.

This change allows using the constants also in the globals.h header.

Bug: v8:12689
Change-Id: I2498502284ab1e8dc8a3526229613ea1ce6624bc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3849377
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82662}