Revert of Resolve references to "this" the same way as normal variables

src/contexts.cc

Index: src/contexts.cc
diff --git a/src/contexts.cc b/src/contexts.cc
index 12eb871e15ddbe5eb9acb67acb4485fcec01c258..a6a61df624a49c9460806a96fee5b166ba65efcd 100644
--- a/src/contexts.cc
+++ b/src/contexts.cc
@@ -258,13 +258,8 @@
           object->IsJSContextExtensionObject()) {
         maybe = JSReceiver::GetOwnPropertyAttributes(object, name);
       } else if (context->IsWithContext()) {
-        // A with context will never bind "this".
-        if (name->Equals(*isolate->factory()->this_string())) {
-          maybe = Just(ABSENT);
-        } else {
-          LookupIterator it(object, name);
-          maybe = UnscopableLookup(&it);
-        }
+        LookupIterator it(object, name);
+        maybe = UnscopableLookup(&it);
       } else {
         maybe = JSReceiver::GetPropertyAttributes(object, name);
       }