Make `check-url` available in configuration files (#9032)
## Summary
Fixes #9027
Minor enhancement on top of #8531 that makes the CLI parameter
`--check-url` also available as the setting `check-url` in configuration
files.
## Test Plan
Updates existing tests to take the new setting into account.
Within publish command testing I didn't see existing tests covering
settings from toml files (instead of from CLI params), so I didn't add
anything of that sort.
