Fix radio button toggle on Sites edit page (#3318)

Why:

* The Sites edit page was toggling the routing option in the page on and
off every time a change to the page was made (i.e. every time something
was clicked or typed). This was causing the Site to not be editable in
certain situations. It ended up being because the form field value being
set was not consistently the same type. It would come back as either an
atom or a string, but the radio button input was only checking for
atoms.

Fixes: #3239

elixir/apps/web/lib/web/live/sites/edit.ex

@@ -55,7 +55,9 @@ defmodule Web.Sites.Edit do
                       field={@form[:routing]}
                       value="managed"
                       label={pretty_print_routing(:managed)}
-                      checked={@form[:routing].value == :managed}
+                      checked={
+                        @form[:routing].value == :managed || @form[:routing].value == "managed"
+                      }
                       required
                     >
                       <.badge
@@ -78,7 +80,9 @@ defmodule Web.Sites.Edit do
                       field={@form[:routing]}
                       value="stun_only"
                       label={pretty_print_routing(:stun_only)}
-                      checked={@form[:routing].value == :stun_only}
+                      checked={
+                        @form[:routing].value == :stun_only || @form[:routing].value == "stun_only"
+                      }
                       required
                     />
                     <p class="ml-6 mb-4 text-sm text-neutral-500">