* [Plot] Check for telemetry panels
...from plot view policy, and don't try to interrogate them
for telemetry metadata that they will not have.
Fixes#1728
* [Plot] Update test case for policy
...to provide an adapted object with expected properties
* [Plot] Add tests to very plot policy for panels
...to verify fix for #1728
Update policy to detect any range. As a simple way to prevent
detecting messages, it will not apply when every range is a string
format.
fixes https://github.com/nasa/openmct/issues/1713
