They won't--Sengled uses ZHA 1.2 (though there appear to be new Zigbee 3.0 products in the certification database, I'm assuming they haven't made it to general release yet). Hue requires ZLL or Zigbee 3.0. ZHA (Zigbee Home Automation) and ZLL (Zigbee Light Link) are two slightly different Zigbee profiles, and you can usually pair devices of the latter profile to networks of the former kind but not vice versa.
However: you can pair the Sengled strip directly to Hubitat. Of course, if all your other bulbs are Hue, you'll lose some nice-ness of Hue like this (e.g., they can't directly participate in Hue scenes or rooms/zones, and they'll need to be added to Alexa/GA via Hubitat if desired). Hubitat has scenes but they're not quite as good as Hue scenes (notably, they don't use group broadcasting and on-device scene tables that allow Hue to be nearly instant and nearly 100% reliable at achieving the desired outcome), but with only one "real" Zigbee bulb in the mix as far as Hubitat is concerned, the results probably won't be too disastrous.