Moved the Depth Buffer copy at the right place when in forward (it was done too late, resulting in various bias problem in shadows/ssao)

ScriptableRenderPipeline/HDRenderPipeline/HDRenderPipeline.cs

 
             RenderGBuffer(m_CullResults, camera, renderContext, cmd);
 
-            // If full forward rendering, we did not do any rendering yet, so don't need to copy the buffer.
-            // If Deferred then the depth buffer is full (regular GBuffer + ForwardOnly depth prepass are done so we can copy it safely.
-            if (!m_Asset.renderingSettings.useForwardRenderingOnly)
-            {
-                CopyDepthBufferIfNeeded(cmd);
-            }
+            // In both forward and deferred, everything opaque should have been rendered at this point so we can safely copy the depth buffer for later processing.
+            CopyDepthBufferIfNeeded(cmd);
 
             // Required for the SSS and the shader feature classification pass.
             PrepareAndBindStencilTexture(cmd);