Use :default-checked instead of :checked

re-frame seems to have trouble with controlled vs uncontrolled input elements.
Looks like using :default-value helps though:
day8/re-frame#39 (comment)

src/cljs/rems/application.cljs

@@ -574,7 +574,7 @@
                               :name (str "license" id)
                               :disabled readonly
                               :class (when validation "is-invalid")
-                              :checked approved
+                              :default-checked approved
                               :on-change (set-license-approval id)}]
     [:span.form-check-label content]]
    [field-validation-message validation title]])