[BUG] `Lookup.SelectRelatedEntity` cannot find the entity name

[tdashworth]

Bug Report

Issues should only be created for items related to covered functionality.

Not covered functionality, feature requests, and questions should use the Feature Request or Question templates.

EasyRepro Version

• [ ] Microsoft Dynamics 365 Online Version 8.2 (8.2.x) (DB 8.2.x) online
• [ ] Microsoft Dynamics 365 Online Version 9.0 (9.0.x) (DB 9.0.x) online
• [ ] Microsoft Dynamics 365 Online Version 9.0.2 (9.0.2) (DB 9.0.2) online
• [x] Microsoft Dynamics 365 Online Version 9.1 (9.1.x) (DB 9.1.x) online

UCI or Classic Web

• [ ] UCI (XrmApp)
• [x] Classic Web (XrmBrowser)

Online or On Premise

• [x] Online
• [ ] On Premise

Browser

• [x] Chrome
• [ ] Firefox
• [ ] IE
• [ ] Edge

Describe the bug

This stems from platform changes with the Advanced Lookup feature.

Special formatting / display

Lookup is a Customer type.

Code to reproduce

Expected behavior

Screenshots

Additional context

This was identified by Capgemini's Power Apps Specflow Bindings. The pipeline run is: https://capgeminiuk.visualstudio.com/GitHub%20Support/_build/results?buildId=7866&view=ms.vss-test-web.build-test-results-tab&runId=1005114&resultId=100159&paneView=debug