Revert "deps: remove bogus V8 DCHECK"

This reverts commit fba06eb.

Author: targos

common.gypi

@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.14',
+    'v8_embedder_string': '-node.15',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/ast/scopes.cc

@@ -2713,6 +2713,7 @@ void Scope::AllocateScopeInfosRecursively(
 
   // Allocate ScopeInfos for inner scopes.
   for (Scope* scope = inner_scope_; scope != nullptr; scope = scope->sibling_) {
+    DCHECK_GT(scope->UniqueIdInScript(), UniqueIdInScript());
     DCHECK_IMPLIES(scope->sibling_, scope->sibling_->UniqueIdInScript() !=
                                         scope->UniqueIdInScript());
     if (!scope->is_function_scope() ||