Changes to Get Active Organization

added BillingTierType to the usage_limits/allOf[subschema #1: UsageLimits]/billing_tier response property allOf list for the response status 200

removed BillingTier from the usage_limits/allOf[subschema #1: UsageLimits]/billing_tier response property allOf list for the response status 200

the billing_tier response's property default value changed from free to trial for the status 200

the mau response's property default value changed from 1000 to 5000 for the status 200

the tenants response's property default value changed from 20 to 50 for the status 200

the usage_limits response's property default value changed from {"mau":1000,"tenants":20,"billing_tier":"free"} to {"mau":5000,"tenants":50,"billing_tier":"trial"} for the status 200