Only show physical display as recording targed for screen recording

Filter out virtual display from the list of display to be recorded in
the screen recording dialog.

We keep the overlay display since they are gated by a developer option
already and are useful for development purpose.

Test: com.android.systemui.screenrecord.ScreenRecordPermissionDialogDelegateTest#doNotShowVirtualDisplayInDialog
Bug: 362720120
Flag: com.android.media.projection.flags.media_projection_connected_display_no_virtual_device
Change-Id: Ice0d3d38c32db0577f5c818708560142740e647d