FarShadow range not considered in GetViewDependentWholeSceneProjectedShadowInitializer

Cascade index 0 is passed into GetViewDependentWholeSceneProjectedShadowInitializer. I think the intent of MaxShadowCascades = 1 and requesting cascade index 0 is to get a single bounding volume for the "does this primitive receive CSM shadows?" test. The problem is that GetSplitDistance with NumNearCascades = 1 returns WholeSceneDynamicShadowRadius for SplitIndex = 1 (the far edge). Far shadow cascades cover [WholeSceneDynamicShadowRadius, FarShadowDistance], which is completely outside this frustum. So any primitive that's beyond WholeSceneDynamicShadowRadius but within FarShadowDistance gets classified as a non-CSM receiver and gets the non-shadow shader.

1. Start a new project with static lighting disabled.
2. Set the mobile rendering path to Forward.
3. In the Directional Light, set the max dynamic cascades to 1 and the distance to 5000, and the far cascades to 1 with a distance of 20000
4. Place a box at 3000 units and 10,000 units from the camera
5. Set "Far shadow" property on each Box
6. Duplicate the floor mesh at scale 1.0 and put a copy under each of the cubes, to receive shadows
7. Enable Android Vulkan High preview platform
8. Enter the console command “r.Shadow.RadiusThreshold 0”
9. Move the camera back and forth. There will be areas where the shadow on the more distant cube disappears.