[Bug]: `TypeSymbol.getLocation()` returns empty for return type descriptor of a remote method

[rdulmina]

Description

Consider the below sample

service  on new workflow:WorkflowEventListener(persistentProvider) {

    @workflow:Query
    isolated remote function orderStatus() returns function {
        return function () {};
    }

    @workflow:Query
    isolated remote function orderStatus() returns object {} {
        return object {};
    }
}

When you try to get the location of return types function and object {}, it gives an empty result. I work for map<string>

Steps to Reproduce

No response

Affected Version(s)

2201.12.9

OS, DB, other environment details and versions

No response

Related area

-> Compilation

Related issue(s) (optional)

No response

Suggested label(s) (optional)

No response

Suggested assignee(s) (optional)

No response

[rdulmina]

Need to fix ballerina-platform/ballerina-library#8423 (comment) after this is fixed.