This increases the kInstructionSize to give the nosnap Isolate
more space to initialize itself.

This is a reland of 29809611

Original change's description:
> [heap] Add tests to CodeBuilder Build and TryBuild
>
> Bug: chromium:957934
> Change-Id: Ia1ce5f6150b7f862b38f4c135236b154a1b02d6c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1594564
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Maciej Goszczycki <goszczycki@google.com>
> Cr-Commit-Position: refs/heads/master@{#61391}

Bug: chromium:957934
Change-Id: Ib7458f7c18063dbc8bc685ddbb9f22f781c52aa5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1609477
Commit-Queue: Maciej Goszczycki <goszczycki@google.com>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61454}