Add metadata to indicate full dashboard embedding is supported (ray-project#56077)

Since we introduced panel groups to Default
(ray-project#55620) & Data
(ray-project#55495) dashboards, applications
consuming Grafana dashboards can comfortably embed the full dashboard on
any UI now (and the other dashboards are pretty usable even without
them).

Added a `"supportsFullGrafanaView"` tag to the `rayMeta` list in Default
Dashboard to indicate to consumers that we support full Grafana
dashboard embedding from now on.

---------

Signed-off-by: anmol <anmol@anyscale.com>
Co-authored-by: anmol <anmol@anyscale.com>
Signed-off-by: sampan <sampan@anyscale.com>

Author: 2 people

python/ray/dashboard/modules/metrics/dashboards/default_grafana_dashboard_base.json

@@ -163,6 +163,7 @@
       }
     ]
   },
+  "rayMeta": ["supportsFullGrafanaView"],
   "time": {
     "from": "now-30m",
     "to": "now"