Fixed Default Textures from Modular Shader props werent applied

- ApplyDefaultTextures function was only grabbing textures from the modules, but not the Shader's props themselves, this little fix addresses that

Author: orels1

Editor/ShaderGenerator.cs

@@ -849,6 +849,7 @@ private static void ApplyDefaultTextures(List<ShaderContext> contexts)
             {
                 var importedShader = AssetImporter.GetAtPath($"{context.FilePath}/" + context.VariantFileName) as ShaderImporter;
                 var customTextures = context.Modules.SelectMany(x => x.Properties).Where(x => x.DefaultTextureAsset != null).ToList();
+                customTextures.AddRange(context.Shader.Properties.Where(x => x.DefaultTextureAsset != null).ToList());
                 if (importedShader != null)
                 {
                     importedShader.SetDefaultTextures(customTextures.Select(x => x.Name).ToArray(), customTextures.Select(x => x.DefaultTextureAsset).ToArray());