External authentication. There is no error for deleted or inactive customer

[ahjszll]

V4.80.3
When a user is deleted, the delete attribute is set to true，
But there was no warning prompt when using third-party login，

I temporarily used the following code modification, perhaps you will have a better way to modify it in the future

src/Libraries/Nop.Services/Authentication/External/ExternalAuthenticationService.cs line:274

`
public virtual async Task AuthenticateAsync(ExternalAuthenticationParameters parameters, string returnUrl = null){
ArgumentNullException.ThrowIfNull(parameters);

    var customer = await _workContext.GetCurrentCustomerAsync();
    var store = await _storeContext.GetCurrentStoreAsync();
    if (!await _authenticationPluginManager.IsPluginActiveAsync(parameters.ProviderSystemName, customer, store.Id))
        return await ErrorAuthenticationAsync(new[] { "External authentication method cannot be loaded" }, returnUrl);

    //get current logged-in user
    var currentLoggedInUser = await _customerService.IsRegisteredAsync(customer) ? customer : null;

    //authenticate associated user if already exists
    var associatedUser = await GetUserByExternalAuthenticationParametersAsync(parameters);
    if (associatedUser != null)
    {
        /** my new code
        if (associatedUser.Deleted)
            return await ErrorAuthenticationAsync(new List<string> { "****" }, "");
        if (!associatedUser.Active)
            return await ErrorAuthenticationAsync(new List<string> { "****" }, "");
        //only registered can login
        if (!await _customerService.IsRegisteredAsync(associatedUser))
            return await ErrorAuthenticationAsync(new List<string> { "****" }, "");
        **/

        return await AuthenticateExistingUserAsync(associatedUser, currentLoggedInUser, returnUrl);
    }

    //or associate and authenticate new user
    return await AuthenticateNewUserAsync(currentLoggedInUser, parameters, returnUrl);
}

`