Vanilla Shadow needs to be upgraded

 Add "Real-time Vanilla Shadows" Option for Fancy Graphics.

 In the Graphics settings (under "Fancy"), please consider adding a toggle named "Real-time Vanilla Shadows" that enables basic dynamic shadows that follow the Sun/Moon direction. Update shadows every time the Moon or Sun moves 30° across the arc of the sky.

 Shadows can stay Vanilla but with dynamic shadows that update every few minutes. Option can be automatically hidden or disabled on low-end devices:

- No shaders or RTX needed

- Great for mid-tier devices

- Improves visual depth in Vanilla

This gives more players access to a better visual experience without relying on external mods, resource packs, even Vibrant Visuals.