Default modifier 95 for virtual sessions on insurance claims

Allow selecting a default modifier for virtual sessions on insurance claims instead of entering it manually every time. Modifiers for virtual sessions are either 93 for audio only or 95 for video and audio. Since the platform is based off of video and audio, 95 should be the default modifier on claims, with the ability to modify single instances when the other mode is used. Audio-only sessions (93) are very rare these days and are not likely for people using Upheal anyway.