[Port] [2022.3] [URP] Fix Screen Space Shadows depth precision issue

Author: svc-reach-platform-support

Packages/com.unity.render-pipelines.universal/Shaders/Utils/ScreenSpaceShadows.shader

@@ -20,10 +20,8 @@ Shader "Hidden/Universal Render Pipeline/ScreenSpaceShadows"
         {
             UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
 
-#if UNITY_REVERSED_Z
-            float deviceDepth = SAMPLE_TEXTURE2D_X(_CameraDepthTexture, sampler_PointClamp, input.texcoord.xy).r;
-#else
-            float deviceDepth = SAMPLE_TEXTURE2D_X(_CameraDepthTexture, sampler_PointClamp, input.texcoord.xy).r;
+            float deviceDepth = LoadSceneDepth(input.positionCS.xy);
+#if !UNITY_REVERSED_Z
             deviceDepth = deviceDepth * 2.0 - 1.0;
 #endif