Stream is not returning custom error type when using next()

[sinthuja]

Description:
My iterator returns 'public function next() returns record{| record{} value; |}| sql:Error?', but when I do stream.next(), it's not returning my custom error - 'Error', and it's returning generic 'error' type. And hence I couldn't do,

record{| NumericInvalidColumn value; |}|sql:Error? data =  streamData.next();

And I can only do.

record{| NumericInvalidColumn value; |}|error? data =  streamData.next();

Compilation error:

    ERROR: .::query-test.bal:71:64:: incompatible types: expected '(record {| NumericInvalidColumn value; |}|ballerina/sql:DatabaseError|ballerina/sql:ApplicationError)?', found '(record {| NumericInvalidColumn value; |}|error)?'
        at org.ballerinalang.test.util.BRunUtil.getInvokedFunction(BRunUtil.java:1143)
        at org.ballerinalang.test.util.BRunUtil.invokeFunction(BRunUtil.java:1162)
        at org.ballerinalang.jdbc.query.NumericTypesQueryTest.testQueryNumericTypeRecord(NumericTypesQueryTest.java:83)

[mohanvive]

Fixed with #21524 ...