This PR reverts #20076 to turn the `ThemeRegistry` back into a regular
struct again.
It doesn't actually help us by having it behind a trait.
Release Notes:
- N/A
This PR converts the `ThemeRegistry` type into a trait instead of a
concrete implementation.
This allows for the extension store to depend on an abstraction rather
than the concrete theme registry implementation.
We currently have two `ThemeRegistry` implementations:
- `RealThemeRegistry` — this was previously the `ThemeRegistry` and
contains the real implementation of the registry.
- `VoidThemeRegistry` — a null object that doesn't have any behavior.
Release Notes:
- N/A
This PR gives the `NumericStepper` component an ID.
This prevents the UI and buffer font size settings controls from having
their increment/decrement buttons visually change when the other one is
pressed.
Release Notes:
- N/A
Marshall Bowers
Piotr Osiewicz