Defstyled component is not properly handling children when some of them are fragments with `unsafe-html`

[chromalchemy]

Reverted to 661281f5aa7682cc4cb34a836e783ccb4841cda8 and it works as expected.

In my case i was rendering handlebars html.

Test case is something like:

(o/defstyled myelem :div)

 [:<>
   [:div.before-custom-elem]
   [myelem
    [:div.before-unsafe]
    [:<>
     [::hiccup/unsafe-html "{{open handlebars tag}}"]
     [:div.inside-unsafe]
     [::hiccup/unsafe-html "{{close handlebars tag}}"]]
    [:div.after-unsafe]]
   [:div.after-custom-elem]]

[:div.after-unsafe] was disappearing when rendering html.

Rendered to html with latest lambdaisland.hiccup Wanted to get this out there asap because this can silently break rendered html.