This fixes a build problem in gcc, where the constexpr function
SwissNameDictionary::SizeFor uses the non-constxpr function
SwissNameDictionary::IsValidCapacity in a DCHECK.

Bug: v8:11388
Change-Id: Iaeb2b80bb72da3a9c895aa33977c160533019c35
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2684514Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Frank Emrich <emrich@google.com>
Cr-Commit-Position: refs/heads/master@{#72595}