The assumtion that V8 has no output differences within a single line
before a stack overflow, didn't hold. The prefix of e.g. console.info
can lead to a difference in a recursive call.

This change makes foozzie's output capping before a crash work on the
level of characters instead of lines to fix this.

No-Try: true
Bug: chromium:1050942
Change-Id: I13f747caf4f5848d40c31bd4232811285bab3c17
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049844Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66217}