Default Context Mappings Clearing Out Custom Triggers on module load

This is happening because UEnhancedPlayerInput::UEnhancedPlayerInput is attempting to load the IMC asset, but if your triggers are defined outside the engine module then it would trigger a load of that asset and not be able to access them

1. Create a custom input trigger class for your project
2. Add this trigger to an IMC
3. Add the IMC to the "Default Mapping Contexts" 
4. Save and close your project
5. Open the project again
6. Notice your IMC has had its triggers removed