Fix isolate verification in noembed builds

Tbr: sigurds@chromium.org
Bug: v8:8723
Change-Id: Ieffeccf9b4f3f23a61f8247594eac2ea8c2a5ca4
Reviewed-on: https://chromium-review.googlesource.com/c/1448326Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59269}

src/isolate.cc

@@ -3152,6 +3152,7 @@ void CreateOffHeapTrampolines(Isolate* isolate) {
 
 #ifdef DEBUG
 bool IsolateIsCompatibleWithEmbeddedBlob(Isolate* isolate) {
+  if (!FLAG_embedded_builtins) return true;
   EmbeddedData d = EmbeddedData::FromBlob(isolate);
   return (d.IsolateHash() == isolate->HashIsolateForEmbeddedBlob());
 }