Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. In Project window navigate to Packages > Universal Render Pipeline > Shaders > Nature
3. Open “SpeedTree9_URP.shadergraph” Shader Graph Asset
4. Observe the Console window

Actual results: “Shader error in 'Universal Render Pipeline/Nature/Master': redefinition of 'LOD_FADE_CROSSFADE' at /(97) (on metal)” errors are thrown in the Console window when opening “SpeedTree9_URP.shadergraph” Asset

Expected results: No errors are thrown in the Console when opening “SpeedTree9_URP.shadergraph” Asset

Reproducible with versions: 6000.4.6f1 (0b051c2e5d54), 6000.4.7f1, 6000.5.0b9, 6000.6.0a5
Not reproducible with versions: 6000.3.14f1, 6000.4.5f1 (cc83ebd631f8)

Tested on (OS): macOS Tahoe 26.4.1

{code:java}
Shader error in 'Universal Render Pipeline/Nature/Master': redefinition of 'LOD_FADE_CROSSFADE' at /(95) (on metal)

Compiling Subshader: 0, Pass: Universal Forward, Vertex program with REFLECTION_PROBE_ROTATION USE_LEGACY_LIGHTMAPS _CLUSTER_LIGHT_LOOP _MAIN_LIGHT_SHADOWS
Platform defines: SHADER_API_DESKTOP UNITY_ENABLE_DETAIL_NORMALMAP UNITY_ENABLE_REFLECTION_BUFFERS UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_LIGHTMAP_FULL_HDR UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_NEEDS_RENDERPASS_FBFETCH_FALLBACK UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BLENDING UNITY_SPECCUBE_BOX_PROJECTION UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS
Disabled keywords: DIRLIGHTMAP_COMBINED DOTS_INSTANCING_ON DYNAMICLIGHTMAP_ON EVALUATE_SH_MIXED EVALUATE_SH_VERTEX FOG_EXP FOG_EXP2 FOG_LINEAR INSTANCING_ON LIGHTMAP_BICUBIC_SAMPLING LIGHTMAP_ON LIGHTMAP_SHADOW_MIXING LOD_FADE_CROSSFADE PROBE_VOLUMES_L1 PROBE_VOLUMES_L2 SHADER_API_GLES30 SHADER_API_GLES31 SHADER_API_GLES32 SHADOWS_SHADOWMASK UNITY_ASTC_NORMALMAP_ENCODING UNITY_COLORSPACE_GAMMA UNITY_HARDWARE_TIER1 UNITY_HARDWARE_TIER2 UNITY_HARDWARE_TIER3 UNITY_LIGHTMAP_DLDR_ENCODING UNITY_LIGHTMAP_RGBM_ENCODING UNITY_METAL_SHADOWS_USE_POINT_FILTERING UNITY_NO_DXT5nm UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 UNITY_PBS_USE_BRDF3 UNITY_PRETRANSFORM_TO_DISPLAY_ORIENTATION UNITY_UNIFIED_SHADER_PRECISION_MODEL UNITY_VIRTUAL_TEXTURING _ADDITIONAL_LIGHTS _ADDITIONAL_LIGHTS_VERTEX _MAIN_LIGHT_SHADOWS_CASCADE _MAIN_LIGHT_SHADOWS_SCREEN
{code}