deps: V8: cherry-pick b33bf2dfd261

Original commit message:

    Ignore --predictable when computing flag list hashes

    This allows reproducible code cache generation.

    Refs: #48749

    Change-Id: Ib4693de60ddff1fe41d95c10980f763463db3f95
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4681766
    Reviewed-by: Leszek Swirski <leszeks@chromium.org>
    Commit-Queue: Joyee Cheung <joyee@igalia.com>
    Cr-Commit-Position: refs/heads/main@{#88943}

Refs: v8/v8@b33bf2d
PR-URL: #49703
Refs: v8/v8@de9a5de
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>

deps/v8/src/flags/flags.cc

@@ -539,8 +539,10 @@ uint32_t ComputeFlagListHash() {
     // We want to be able to flip --profile-deserialization without
     // causing the code cache to get invalidated by this hash.
     if (flag.PointsTo(&v8_flags.profile_deserialization)) continue;
-    // Skip v8_flags.random_seed to allow predictable code caching.
+    // Skip v8_flags.random_seed and v8_flags.predictable to allow predictable
+    // code caching.
     if (flag.PointsTo(&v8_flags.random_seed)) continue;
+    if (flag.PointsTo(&v8_flags.predictable)) continue;
     modified_args_as_string << flag;
   }
   std::string args(modified_args_as_string.str());