Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.76.2
• OS Version: MacOs/Web

Steps to Reproduce:

1. Disable "Configuration Editing" extension so that only one userDataProfileContentHandler is enabled.
2. Run "Profiles: Export Profile command.
3. Click Export on the export profile view.

Expected:
The file picker shows up so I can select where to save the profile export.

Actual:
Nothing happens.

Checking the source code in src/vs/workbench/services/userDataProfile/browser/userDataProfileImportExportService.ts in the pickProfileContentHandler method, in the case of one handler it returns the value of the only handler which is a IUserDataProfileContentHandler instead of the string key.