In parallel to the strict octal check that would reject `012` in strict mode, this patch collects UseCounters for `089` in strict mode. The spec says this should be an error, but this patch does not report it as such.

BUG=v8:4973
LOG=y

Review-Url: https://codereview.chromium.org/1948403002
Cr-Commit-Position: refs/heads/master@{#36221}