This CL disables exposing the d8.test.fast_c_api constructor when
we're doing correctness fuzzing to prevent TypeError when the object
is not defined (which happens when --turbo-fast-api-calls is not
passed).

Bug: chromium:1196569
Change-Id: I39069c736d11326419b7562189931afc69a485b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2808940Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73822}