This CL adds partial support for objects whose slow mode dictionaries
are OrderedNameDictionaries. This is the case for all slow mode objects
if V8_DICT_MODE_PROTOTYPES is enabled.

In particular, this part contains the remaining fixes to runtime code,
except for the class templating logic, which follows in a later CL.

Bug: v8:7569
Change-Id: Ib4d08d7d352125709ca916dfc75018dabf71b0cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2540549Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Frank Emrich <emrich@google.com>
Cr-Commit-Position: refs/heads/master@{#71275}