[Plot] Update policy to detect any range

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

platform/features/plot/bundle.js

@@ -118,7 +118,10 @@ define([
             "policies": [
                 {
                     "category": "view",
-                    "implementation": PlotViewPolicy
+                    "implementation": PlotViewPolicy,
+                    "depends": [
+                        "openmct"
+                    ]
                 }
             ],
             "representations": [