Summary:
@public
This fixes an issue with the containerBackgroundColor property of `<Text>` nodes, where containerBackgroundColor was being overridden by the backgroundColor. I also fixed up the example so that it demonstrates the feature more clearly.
Test Plan:
* Check UIExplorer text example
* Run Catalyst snapshot tests and check MAdMan, Groups
Nick Lockwood
Alex Akers
Amjad Masad
Christopher Chedeau
Basil Hosmer
Spencer Ahrens