[iOS] Temporary fix Good Visits dump without crashing issues.

This CL temporarily fixes the Good Visits crashes by removing the dump
without crashing declarations, and playing with values to prevent
negatives. Further work will be recorded on: crbug.com/340554892

Fixed: 340512654
Change-Id: I71b3c81975deb174de3d49c1c39b606a92929f38
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5538593
Reviewed-by: Adam Arcaro <adamta@google.com>
Commit-Queue: Adam Arcaro <adamta@google.com>
Auto-Submit: Guillem Perez <guiperez@google.com>
Cr-Commit-Position: refs/heads/main@{#1300907}