Updates in CDM dialogs for VDM screen mirroring

With the introduction of VDM interactive screen mirroring, the
message of the CDM dialog for app_streaming and device_streming
roles is being updated to inform the user regarding the potential
privacy implications.

App streaming dialog screenshots
Before - https://screenshot.googleplex.com/9ZoiLqj6GWEWkCN.png
After - https://screenshot.googleplex.com/4ufMdY9cVfAAtxx.png

Device streaming dialog screenshots
Before - https://screenshot.googleplex.com/BoRnT5ZwUwckSBQ.png
After - https://screenshot.googleplex.com/9syAMbBqBVKGqn2.png

Test: VirtualDeviceManager demo app
Bug: 292212199
Change-Id: I22bf148ed1aa24f79124c85a406ab381ae7aab46