How to listen for events received by websocket subscribed to in the global module and check ui based on the events received？

[Abbyzhoum]

In window, there is an object named wellClient, which supports the on (eventName, message) method, which supports subscribing to an event name and getting the message body of the event, how to subscribe to wellClient.on() in Cypress and check the status of the ui after receiving an event

=========================== code =================================

`describe('The Home Page', () => {
const { domain , extNo, password, agentNo } = Cypress.env('agentLoginInfo')
const { phone, prefix } = Cypress.env('outbound')

beforeEach(() => {
  cy.visit('/#/Login')

  cy.window().then((win) => {
    cy.spy(win.wellClient, 'on').as('wellClient.on')
  })

  cy.login({ domain, extNo, password, agentNo })

  cy.get('@wellClient.on').should('be.calledWith', 'agentLoggedOn')
  cy.get('@wellClient.on').should('be.calledWith', 'agentNotReady')
  
  cy.window().its('localStorage').should('have.property', 'wellclient:ssid')
  cy.url().should('include', 'Home')
})

it('test makeCall', () => {
  cy.get('input[placeholder="请输入号码"]')
    .clear()
    .type(phone)
    .should('have.value', phone)

  cy.contains('button', '拨打').click()

  //  How to subscribe to wellClient.on(eventName,message）
  //  wellClient.on(eventName, (message)=>{ 
  //        Check the status of the ui
  //  })

  cy.window()      //   This subscription method does not work
  .then((win) => {
    cy.log(win.wellClient)
    win.wellClient.on('originated',(event)=>{
      cy.log(event)
      cy.contains('button', '挂断').not('disabled')
      cy.contains('button', '挂断').click()
    })
  })
})`