mgr/dashboard: Add short descriptions to the telemetry report preview
A small info icon with a popover on the telemetry report preview form step2 for
Report ID and Report Preview.
Report ID: "A randomized UUID to identify a particular cluster over the course of several telemetry reports."
Report preview: "The actual telemetry data that will be submitted."
Fixes: https://tracker.ceph.com/issues/47610 Signed-off-by: Nizamudeen A <nia@redhat.com>