Don't count nested function scopes towards MaxNestedContextChainlength

src/ast/scopes.cc

Index: src/ast/scopes.cc
diff --git a/src/ast/scopes.cc b/src/ast/scopes.cc
index 22661ec2b0bd91e90efc2fc27a1083417dcba83f..d9f34c894238ce934848e3636e7a361e0b602208 100644
--- a/src/ast/scopes.cc
+++ b/src/ast/scopes.cc
@@ -1153,6 +1153,7 @@ int Scope::ContextChainLengthUntilOutermostSloppyEval() const {
 int Scope::MaxNestedContextChainLength() {
   int max_context_chain_length = 0;
   for (Scope* scope = inner_scope_; scope != nullptr; scope = scope->sibling_) {
+    if (scope->is_function_scope()) continue;
     max_context_chain_length = std::max(scope->MaxNestedContextChainLength(),
                                         max_context_chain_length);
   }