This makes sure that the {WasmGraphBuilder} properly detects the
presence of Simd128 global.get and global.set opcodes and triggers
scalar lowering on architectures without Simd128 support.
R=clemensb@chromium.org
TEST=cctest/test-run-wasm-simd/RunWasm_S128Globals
BUG=v8:9973
Change-Id: I1538bd1d3fea40cc78e82b125d4f113842faf68a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1917148
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65002}