Chase Orbital Account Products setup schema and documentation

Setting up Orbital on your account through Account Products had field naming and schema mismatches that blocked valid configuration. Documentation, the setup schema, and production routing now match what Orbital expects.

• The merchant identifier is documented and validated as merchantId, so your setup matches Orbital's expected property name instead of mixed casing.
• Additional Orbital configuration properties pass product setup validation instead of failing on unknown fields.
• Production Orbital products route to Orbital's production endpoint, so live payments are not sent to a non-production URL.