Set credentials fails - referencing multiple data source kinds in same connector

Preflight Checklist

• I have installed the latest version of Power Query SDK.
• I have checked existing resources, including the common issues and the release notes.
• I have searched for similar issues.

Power Query SDK

2.0.0

Regression From

No response

Platform

Windows

Architecture

x64

OS Version

No response

VSCode version

No response

PQSdkTool Path

No response

Bug Description

When a test M file contains references to multiple data source kinds defend by the same connector, setting credentials fails.

Steps to Reproduce

1. Create a connector that defines multiple data source kinds:

   [Version = "1.0.0"]
   section BenTest;
   
   [DataSource.Kind="BenTest"]
   shared BenTest.Data = () => ...;
   
   [DataSource.Kind="BenTest2"]
   shared BenTest2.Data = () => ...;
   
   BenTest = [ Authentication = [ Anonymous = [] ]];
   BenTest2 = [ Authentication = [ Anonymous = [] ]];
   

2. Create a test M file that references more than one of these data source kinds:

   section Tests;
   
   shared A = BenTest.Data();
   
   shared B = BenTest2.Data(); 
   

3. Run "set credentials".

Actual Experience

Set credentials process prompts the user to select which data source kind they are setting credentials for and the M test file, as well as the credentials kind (all as expected; good), before erroring with the following (bad):

Expected Experience

Credentials for the specified kind should have been successfully set.

Additional Context

No response