Per selected table: its name + the column count it would materialize.
Operator cap on columns per table (from MJ_INTEGRATION_MAX_COLUMNS_PER_TABLE). null = unbounded.
Operator cap on table count (from MJ_INTEGRATION_MAX_TABLES). null = unbounded.
Number of tables the user selected to materialize.
§B — input for decideSchemaLimitViolations: the selected table/column counts + the operator caps.