runtime: add test for StorepNoWB param leaking

CL 249962 added wasm StorepNoWB implementation in assembly, it's now
like all other architectures. This CL adds a general test that the
second param of StorepNoWB must be force to escape.

Fixes #40975

Change-Id: I1eccc7e50a3ec742a1912d65f25b15f9f5ad9241
Reviewed-on: https://go-review.googlesource.com/c/go/+/249761


Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>