Oilpan: When copyStackUntilSafePointScope, allow more stack copying for ASan/LSan builds

1. This stack copying limit is a performance sanity check;
2. ASan/LSan use more space on the stack, and performance is not an issue for LSan/ASan. So, we allow more stack copying to avoid test case failed on these builds.

R=ager@chromium.org, oilpan-reviews@chromium.org
BUG=403273

Review URL: https://codereview.chromium.org/474203002

git-svn-id: svn://svn.chromium.org/blink/trunk@180428 bbb929c8-8fbe-4397-9dbb-9b2b20218538