PeoplePicker doesn't return the right results with MockProviderBehavior

[michael-hawker]

Describe the bug

The MockProvider always seems to return the same search results regardless of the search query.

Steps to Reproduce

Steps to reproduce the behavior:

1. Run sample
2. Type in 'Alex'

Expected behavior

Expect to see Alex Wilber at top, but instead see other random list containing Isaiah.

Screenshots

Works in Graph Explorer:

Works fine in Live Service too:

Additional context

The service is working fine as seen through Graph Explorer, confirmed with network inspection that query parameters are getting mangled by MockProvider.

[michael-hawker]

I've confirmed this is explicitly an issue with our MockProvider. It doesn't appear to be appending the query parameters for the search correctly.

[michael-hawker]

This appears to be happening somewhere in the construction of the base HttpRequest done by the Graph SDK, opened an issue there to try and get some more info based on the observations I've seen over the network between the web and .NET SDK differences.