[serializer] Use slow ReadVarintLoop in ReadHeader

This limits the number of DECHECK failures in fuzzing builds that have
no side-effects or security implications.

Bug: chromium:1355059
Change-Id: I909934c62711439f1edd95492b93ee0c582a495d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3859751
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82770}

src/objects/value-serializer.cc

@@ -1220,7 +1220,8 @@ Maybe<bool> ValueDeserializer::ReadHeader() {
   if (position_ < end_ &&
       *position_ == static_cast<uint8_t>(SerializationTag::kVersion)) {
     ReadTag().ToChecked();
-    if (!ReadVarint<uint32_t>().To(&version_) || version_ > kLatestVersion) {
+    if (!ReadVarintLoop<uint32_t>().To(&version_) ||
+        version_ > kLatestVersion) {
       isolate_->Throw(*isolate_->factory()->NewError(
           MessageTemplate::kDataCloneDeserializationVersionError));
       return Nothing<bool>();