Fixed UNITY_REVERSED_Z check. It's always defines in SRP shader library to either 0 or 1. Fixed shadow pancaking on OGL.

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/LightweightPassShadow.hlsl

     // _ShadowBias.x sign depens on if platform has reversed z buffer
     clipPos.z += _ShadowBias.x;
 
-#if defined(UNITY_REVERSED_Z)
-    clipPos.z = min(clipPos.z, 1.0);
+#if UNITY_REVERSED_Z
+    clipPos.z = min(clipPos.z, clipPos.w * UNITY_NEAR_CLIP_VALUE);
-    clipPos.z = max(clipPos.z, 0.0);
+    clipPos.z = max(clipPos.z, clipPos.w * UNITY_NEAR_CLIP_VALUE);
 #endif
     return clipPos;
 }

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightScreenSpaceShadows.shader

             float zDepth = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, i.uv);
             float depth  = Linear01Depth(zDepth, _ZBufferParams);
 
-        #ifdef UNITY_REVERSED_Z
+        #if UNITY_REVERSED_Z
             zDepth = 1 - zDepth;
         #endif