Makes "Add new member" dialog non-exclusive for visual shaders

editor/plugins/visual_shader_editor_plugin.cpp

@@ -2450,6 +2450,7 @@ VisualShaderEditor::VisualShaderEditor() {
 
 	members_dialog = memnew(ConfirmationDialog);
 	members_dialog->set_title(TTR("Create Shader Node"));
+	members_dialog->set_exclusive(false);
 	members_dialog->add_child(members_vb);
 	members_dialog->get_ok()->set_text(TTR("Create"));
 	members_dialog->get_ok()->connect("pressed", callable_mp(this, &VisualShaderEditor::_member_create));