[pp-1] Update use of Range constraint with min 0 to use PositiveOrZero instead

Blocker is in

Tagging this issue as novice, we already have test coverage so all that really needs to change is in the config schemas for these changes.

MR ready for review

This is missing instances in:

1. core/modules/search/config/schema/search.schema.yml
2. user.flood in core/modules/user/config/schema/user.schema.yml
3. core/modules/dblog/config/schema/dblog.schema.yml
4. core/modules/navigation/config/schema/navigation.schema.yml
5. core/modules/announcements_feed/config/schema/announcements_feed.schema.yml
6. core/modules/automated_cron/config/schema/automated_cron.schema.yml
7. core/modules/system/tests/modules/icon_test/config/schema/icon_test.schema.yml

I used a very inaccurate grep to find these: rg --multiline --multiline-dotall 'Range:(.*)min: 0', but I manually checked these and those should be fixed as well. Please make sure to check all schema files.

Thanks for the detailed list! I've gone through all the .schema.yml files and updated the `Range(min: 0)` instances to PositiveOrZero wherever applicable. Let me know if I missed anything!