CPU profiler probes stack frame to find if it's in a valid
state. Under simulator it might happen the frame is not
initialized and MSAN repors that. That's totally ok.
Suppress the warning.

BUG=v8:4751
LOG=N

Review URL: https://codereview.chromium.org/1700533003

Cr-Commit-Position: refs/heads/master@{#34061}