DevTools: Uninitialized context is displayed as an empty object

[micnic]

When inspecting a component that is missing context it is displayed as an empty object, meanwhile if the state is not initialized it is not displayed at all, for no props it is displayed the string None. In my humble opinion it is misleading that no context is displayed as an empty object.

[bvaughn]

Will be resolved by #16617

[micnic]

@bvaughn great, thanks for adding this issue to the PR.