fix incorrect ifdef in texture conversion warning

UnityGLTF/Assets/UnityGLTF/Editor/Scripts/ShaderGraph/InternalShaderGraph/GLTFMaterialHelper.cs

@@ -79,10 +79,10 @@ private static bool ConvertStandardAndURPLit(Material material, Shader oldShader
 
 			material.SetFloat(metallicFactor, metallic);
 			material.SetFloat(roughnessFactor, 1 - smoothness);
+			const string ConversionWarning = "The Metallic (R) Smoothness (A) texture needs to be converted to Roughness (B) Metallic (G). ";
 #if UNITY_EDITOR && UNITY_2022_1_OR_NEWER
 			var importerPath = AssetDatabase.GetAssetPath(metallicGloss);
 			var importer = AssetImporter.GetAtPath(importerPath) as TextureImporter;
-			const string ConversionWarning = "The Metallic (R) Smoothness (A) texture needs to be converted to Roughness (B) Metallic (G). ";
 			if (importer && importer.swizzleG != TextureImporterSwizzle.OneMinusR) // can't really detect if this has been done on the texture already, this is just a heuristic...
 			{
 				if (EditorUtility.DisplayDialog("Texture Conversion",

UnityGLTF/Assets/UnityGLTF/Runtime/Scripts/GLTFSceneExporter.cs

@@ -526,7 +526,7 @@ public void SaveGLTFandBin(string path, string fileName)
 			_exportOptions.BeforeSceneExport?.Invoke(this, _root);
 			BeforeSceneExport?.Invoke(this, _root);
 			beforeSceneExportMarker.End();
-			
+
 			_root.Scene = ExportScene(fileName, _rootTransforms);
 
 			if (ExportAnimations)