Reverting, as this causes other issues, such as no longer hiding fields based on selected profile.
Revert "webui: Don't override manually entered IPTV settings when loading the page (Asus issue, made more visible since they now also override the emf/igmp setting based on the user-selected ISP profile)"

This reverts commit ed146c5fdb776e127573e6760eaba41d8f19cc9c.
webui: preserve emf/igmp setting at IPTV page load (resolve issue introduced in GPL 376_2678)