Support multiple clientId dynamically with MSAL V3

[edwardDev89]

Hi MSAL team, currently I'm upgrading from V2 to V3 and encounter initialization error before calling MSAL API and found this :
https://github.com/AzureAD/microsoft-authentication-library-for-js/blob/dev/lib/msal-browser/docs/v2-migration.md

As my current project structure need support different client Id, we assume user will need to relogin everytime select different client Id, however in V3 we try initialize before call loginRedirect below and can't get msal:loginSuccess event by subscribe to msalBroadcast:

 this.msalBroadcastService.msalSubject$.subscribe((result: EventMessage) => {
    console.log(result)
  })

  // this function call from user select dropdown list clientId value
  async setApplicationAndRedirect(clientId: string) {
    await this.initializeMsalService(clientId)
    this.msalInstance.loginRedirect()
  }

  initializeMsalService(clientId: string): void {
    var msalConfiguration = this.configService.getSettings("msal")
    msalConfiguration.auth["clientId"] = clientId // to replace new clientId from user input selected clientId
    this.msalInstance = new PublicClientApplication(msalConfiguration)

    // Await initialization
    await this.msalInstance.initialize()
   }

May I know is it not the normal behavior that MSAL V3 support multiple client Id?