Improve preferred inspector visibility in online scheduler

Make the preferred inspector field in the online scheduler easier to notice without strongly encouraging more inspector requests.

Transcript Context

The group said the current control is technically present and findable, but agent feedback suggests it is easy to miss. They did not want to make inspector requests too prominent because that makes scheduling harder, reduces calendar optimization, and can interfere with existing bonus/unsolicited-request workflows.

Ideas discussed included moving the label or field farther left in the flow, making the label more prominent above the box instead of inside it, slightly increasing its size, or using a thicker outline / subtle background treatment. They did not want wording changes that would encourage more requests, and there was concern that labels like "select an inspector" or "request inspector" could push behavior in the wrong direction.