Add check whether SharedArrayBuffer exists
Add check whether SharedArrayBuffer exists

This adds a check whether the SharedArrayBuffer exists before
using it within RemoteObject. Since M91 SharedArrayBuffers
are not available anymore to DevTools, and this led this part of
the code to break.

Also-by:024a1e0af501338d11c3b837c6193d11c140d792@chromium.org
Bug: chromium:1196247
Change-Id: I33d784afb718cfcbd5080f8d309ada1828d80bc9
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2804263
Commit-Queue: Kim-Anh Tran <a72f38a79b5fac6811022b8a7fb84830d856c9c9@chromium.org>
Auto-Submit: Kim-Anh Tran <a72f38a79b5fac6811022b8a7fb84830d856c9c9@chromium.org>
Reviewed-by: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>

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