Console strips unknown properties on /validate connectors call

Use the following config for a connector (PostgreSQL Debezium):

{
    "connector.class": "io.debezium.connector.postgresql.PostgresConnector",
    "topic.prefix": "p1",
    "database.hostname": "xxx.eu-west-1.rds.amazonaws.com",
    "database.user": "postgres",
    "database.password": "xxx",
    "database.dbname": "postgres",
    "database.sslmode": "disable",
    "plugin.name": "pgoutput",
    "key.converter": "org.apache.kafka.connect.json.JsonConverter",
    "value.converter": "org.apache.kafka.connect.json.JsonConverter",
    "header.converter": "org.apache.kafka.connect.storage.SimpleHeaderConverter",
    "name": "debezium-postgresql-connector-1",
    "converters": "someConverter",
    "someConverter.type": "com.some.converter.debezium.SomeConverter",
    "someConverter.tables": "public.test_table",
    "someConverter.tables.public.test_table.columns": "tags,schedule"
}

The properties someConverter.* are dynamic based on the converters value. These properties are not send to Kafka Connect with the /validate call, causing the connector to be unable to valiidate the config, as the required converter properties (someConverter.type) are not given. The UI hangs and user cannot create the connector.

Expected behaviour:
All of the defined properties are sent with the /valdiate call.

Start by tracing the Console code that builds and sends the connector configuration to the Kafka Connect /validate endpoint. Reproduce the PostgreSQL Debezium configuration with the dynamic someConverter.* properties, then verify that all defined properties are included in the request and that the UI no longer hangs when validation requires them.