During control flow migration a typo error was introduced on iconComponent check

[meriturva]

See here:
https://github.com/coreui/coreui-angular/blob/main/projects/coreui-angular/src/lib/sidebar/sidebar-nav/sidebar-nav-group.component.html#L25

And pull request: #199 to fix it.
Thanks