Sculpt: Emit Light from Glow Always

We have this for Paint on its way in the next update. But the same setting for sculpts would be useful for people so they don't have to add a painting just to use this feature for an invisible sculpt.

Now, with the way sculpt glow light emission works (a single point in the centre of mass of the sculpt) it won't be all that effective. But still, parity would be appreciated.

...And if a feature comes later down the line that actually glows in the shape of the sculpt (as expected) this would automatically apply in that case too.