ATOM-14947

-Fix vulkan graphics pipeline creation failure having depth clamp off with devices not supporting depth clip.
-Added reason for the mobile version of screen space reflection

Gems/Atom/Feature/Common/Assets/Passes/Reflections_nomsaa.pass

@@ -247,6 +247,8 @@
                     }
                 },
                 {
+                    // Using cut-down version of screen space reflection for handling the attachment format compatibility issues.
+                    // This is used for mobile devices with limited capabilities.
                     "Name": "ReflectionScreenSpaceMobilePass",
                     "TemplateName": "ReflectionScreenSpaceMobilePassTemplate",
                     "Enabled": false,

Gems/Atom/RHI/Vulkan/Code/Source/RHI/GraphicsPipeline.cpp

@@ -287,8 +287,8 @@ namespace AZ
             }
             else if (!rasterState.m_depthClipEnable)
             {
-                AZ_Error("Vulkan", false, "Depth clipping is being used but it's not supported on this device");
-                return RHI::ResultCode::InvalidArgument;
+                // depth clamp must be disabled if physical device does not support it
+                info.depthClampEnable = VK_FALSE;
             }
 
             switch (rasterState.m_fillMode)