Configuration checker window: first run does not display header image

[david-c-kline]

Describe the bug

When using the new configuration checker window (#6286), the first time it displays (generally on package import) the header image does not appear.

To reproduce

Steps to reproduce the behavior:

1. Load the development branch repository
2. Create an asset package containing:
   • MixedRealityToolkit
   • MixedRealityToolkit.Services
   • MixedRealityToolkit.Providers
   • MixedRealityToolkit.SDK
3. Create a new Unity project
4. Import the package created in step 2

Expected behavior

Dialog to be fully populated, including the header image

Screenshots

If applicable, add screenshots to help explain your problem.

Your Setup (please complete the following information)

• Unity 2018.4.11f1
• MRTK development branch

[CDiaz-MS]

This issue comes up when importing the foundation package, but the MRTK Project Configurator window also pops up twice.

[david-c-kline]

This appears to be related to when Unity runs the configuration dialog and when the package import unpacks the image.

[david-c-kline]

No longer seeing this issue. Tested on 2.3.0 using Unity 2018.4.17f1