This prevents v8 to send too many breakpoints and
thus exceed the maximum length for a message in
mojo.

Bug: chromium:1105172
Change-Id: I2af21f117d24c52d2f0df6294f15f091b84b1a75
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2300542Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Kim-Anh Tran <kimanh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68890}