Users cannot define the type for the `io:fileReadCsvAsStream` function

[dulajdilshan]

Description

Test Scenario 1.3

Steps to Reproduce

Here, the function return type is defined as stream<returnType, Error?>. When there are complex inferred types, we should only ask for the element type or member type that we are going to infer.

Version

Usability Test Pack 2026Q1

Environment Details (with versions)

No response