Element: Preserve `OOUI\HtmlSnippet( '' )` when infusing
Element: Preserve `OOUI\HtmlSnippet( '' )` when infusing

Issue exposed by I873b0937e38ae95263d488713dac3624aeeca28b.

Bug: T129822
Change-Id: If847cd3ffb422ddd20d2e5206720a8f42f00ce5a
wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui