You can looking for UI Action > name starts with Show Workflow

https://<instance>.service-now.com/nav_to.do?uri=%2Fsys_ui_action_list.do%3Fsysparm_query%3DnameSTARTSWITHShow%2520Workflow%26sysparm_first_row%3D1%26sysparm_view%3D%26sysparm_choice_query_raw%3D%26sysparm_list_header_search%3Dtrue

doesn't exists... you can create.

A change_task table example

01. Menu system UI > UI Actions

02.

name: Show Workflow

Table: change_task

onclik: showWorkflowContext()

condition: !current.isNewRecord() && (new Workflow().hasWorkflow(current))

script

function showWorkflowContext() {
   var id = g_form.getUniqueValue().toString();
   var url = new GlideURL('context_workflow.do');
   url.addParam('sysparm_stack', 'no');
   url.addParam('sysparm_table', g_form.getTableName());
   url.addParam('sysparm_document', id);
   g_navigation.open(url.getURL(), "_blank")
}