Vulkan: DirectionalLight3D still exposes an Optimized shadow depth range, but this mode is no longer implemented

[Calinou]

Godot version

4.0.dev (659178e)

System information

Fedora 34, GeForce GTX 1080 (NVIDIA 465.31)

Issue description

DirectionalLight3D still exposes an Optimized shadow depth range, but this mode is no longer implemented. It was likely removed in #45023 considering it has few benefits compared to the downsides. While it improves shadow detail, it makes shadows wobble all over the place when the camera moves or rotates.

Using the Optimized shadow depth range in the master branch will not improve shadow detail, but will still make shadows wobble around when the camera moves.

Steps to reproduce

• Add a DirectionalLight3D node and enable Shadows
• Set the directional shadow depth range to Optimized instead of the default Stable.

Minimal reproduction project

test_directionallight3d_optimized.zip