Varying mismatch causing shaders to fail.

servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp

@@ -728,7 +728,7 @@ void SceneShaderForwardClustered::init(const String p_defines) {
 		actions.base_texture_binding_index = 1;
 		actions.texture_layout_set = RenderForwardClustered::MATERIAL_UNIFORM_SET;
 		actions.base_uniform_string = "material.";
-		actions.base_varying_index = 11;
+		actions.base_varying_index = 12;
 
 		actions.default_filter = ShaderLanguage::FILTER_LINEAR_MIPMAP;
 		actions.default_repeat = ShaderLanguage::REPEAT_ENABLE;