Bug: Error messages are cleared and generic errors messages are passed through instead

[anna-dingler]

Description

When setting an error message on an Exception from AppActions, the actions consumer only receives a generic exception message.

Steps To Reproduce

1. Add a where clause and deploy an actions sample from https://github.com/microsoft/App-Actions-On-Windows-Samples.
2. Launch the App Actions Testing Playground
3. Run the action with an entity that does not match the provided where clause
4. See that the error message shown is a generic response

Expected Behavior

The error displayed in the app should be the descriptive error set from AppActions

Version Info

Latest version

Additional Context

No response