Render delegate not reacting to light color update using the Solaris light mixer

[jhodgson]

Updating the light mixer in Solaris is working correctly for the exposure, disabling and soloing lights, but not for changing the light color. Restarting the render or disabling and reenabling the light will force a color change update as a workaround but it's not responsive directly to a change in the light color.

[autodesk-oss-arnold-bot[bot]]

Issue synced internally to ARNOLD-13303