fixed SSR artifacts

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Debug/DebugDisplay.cs

         public static string k_PanelScreenSpaceTracing = "Screen Space Tracing";
         public static string k_PanelDecals = "Decals";
 
-        static readonly string[] k_HiZIntersectionKind = { "None", "Depth", "Cell" };
+        static readonly string[] k_HiZIntersectionKind = { "None", "Cell", "Depth" };
 
         DebugUI.Widget[] m_DebugDisplayStatsItems;
         DebugUI.Widget[] m_DebugMaterialItems;

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/Reflection/ScreenSpaceTracing.hlsl

     float2 crossOffset              // Offset to use to ensure cell boundary crossing
 )
 {
-    const float SQRT_2 = sqrt(2);
-    const float CellPlaneBias = 1E-2;
-
-        // Offset by 1E-3 to ensure cell boundary crossing
+        // Offset to ensure cell crossing
-        + CellPlaneBias;
+        + 0.1;
     // Interpolate screen space to get next test point
     float3 testHitPositionSS = positionSS + raySS * t;