refactor: config warning/error fields (#9349)

lib/config/__snapshots__/migrate-validate.spec.ts.snap

lib/config/__snapshots__/validation.spec.ts.snap

lib/config/presets/index.spec.ts

lib/config/secrets.ts

lib/config/types.ts

lib/config/validation-helpers/managers.ts

lib/config/validation.ts

lib/globals.d.ts

lib/manager/npm/extract/index.ts

lib/util/git/index.ts

lib/util/regex.ts

lib/versioning/regex/index.ts

lib/workers/repository/error-config.spec.ts

lib/workers/repository/error-config.ts

lib/workers/repository/init/config.spec.ts

lib/workers/repository/init/config.ts

lib/workers/repository/onboarding/pr/errors-warnings.spec.ts

lib/workers/repository/onboarding/pr/errors-warnings.ts

lib/workers/repository/process/lookup/filter.ts

lib/workers/repository/process/lookup/index.ts