[nojit] Skip on-heap trampoline in Invoke

This skips one level of indirection by calling the off-heap entry
point directly instead of going through the on-heap Code trampoline.

Bug: v8:7777
Change-Id: If667ea6cd6138ab1c12aa861ef441109008e4fba
Reviewed-on: https://chromium-review.googlesource.com/c/1382459Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58324}

src/execution.cc

@@ -275,7 +275,7 @@ V8_WARN_UNUSED_RESULT MaybeHandle<Object> Invoke(Isolate* isolate,
         Object*** argv, Address root_register_value)>;
     // clang-format on
     JSEntryFunction stub_entry =
-        JSEntryFunction::FromAddress(isolate, code->entry());
+        JSEntryFunction::FromAddress(isolate, code->InstructionStart());
 
     if (FLAG_clear_exceptions_on_js_entry) isolate->clear_pending_exception();