`has_non_instance_prototype` can be modified in live objects. For the
native context's map that we serialize on the background this bit is
"set" but it doesn't change value (i.e. it is set to false when it was
already false).

Bug: v8:7790, v8:11575
Change-Id: I070c0f0e383250d0e3cb92065d1113662976cabf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2772609
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73532}