Correct wrong define used in test + fix issue with transparent keyword not reset

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

     // If we have a prepass, we need to remove the clip from the GBuffer pass (otherwise HiZ does not work on PS4)
     // For Forward
     // Opaque geometry always has a depth pre-pass so we never want to do the clip here. For transparent we perform the clip as usual.
-#if !(SHADER_PASS == SHADERPASS_FORWARD && defined(SURFACE_TYPE_OPAQUE)) && !(SHADER_PASS == SHADERPASS_GBUFFER && defined(_BYPASS_ALPHA_TEST))
+#if !(SHADERPASS == SHADERPASS_FORWARD && defined(SURFACE_TYPE_OPAQUE)) && !(SHADERPASS == SHADERPASS_GBUFFER && defined(_BYPASS_ALPHA_TEST))
     clip(alpha - alphaCutoff);
 #endif
 }

ScriptableRenderPipeline/HDRenderPipeline/Material/Unlit/Editor/BaseUnlitUI.cs

             SurfaceType surfaceType = (SurfaceType)material.GetFloat(kSurfaceType);
             BlendMode blendMode = (BlendMode)material.GetFloat(kBlendMode);
 
+            // These need to always been set either with opaque or transparent! So a users can swtich to opaque and remove the keyword correctly
+            SetKeyword(material, "_BLENDMODE_LERP", false);
+            SetKeyword(material, "_BLENDMODE_ADD", false);
+            SetKeyword(material, "_BLENDMODE_SOFT_ADD", false);
+            SetKeyword(material, "_BLENDMODE_MULTIPLY", false);
+            SetKeyword(material, "_BLENDMODE_PRE_MULTIPLY", false);
+
             if (surfaceType == SurfaceType.Opaque)
             {
                 material.SetOverrideTag("RenderType", alphaTestEnable ? "TransparentCutout" : "");

ScriptableRenderPipeline/HDRenderPipeline/Material/Unlit/UnlitData.hlsl

 void DoAlphaTest(float alpha, float alphaCutoff)
 {
     // Don't do the clip when rendering forward opaque (unlit). Forward opaque always have a prepass (with depth test on)
-#if !(SHADER_PASS == SHADERPASS_FORWARD_UNLIT && defined(SURFACE_TYPE_OPAQUE))
+#if !(SHADERPASS == SHADERPASS_FORWARD_UNLIT && defined(SURFACE_TYPE_OPAQUE))
     clip(alpha - alphaCutoff);
 #endif
 }