Grafana PostgreSQL Overview Dashboard links do not pass pgnode variable

[keithf4]

Describe the issue:
When you click the links in the PG Overview dashboard, the Details dashboard does not have the proper node selected

Describe the expected behavior:
It should directly link to the relevant node.

Fix:
Seems the $__all_variables option in the link isn't working correctly. Removing that and adding the var-pgnodes value directly seems to work as expected. Probably some change in the migration to more recent versions of Grafana

Tell us about your environment:

• pgMonitor version: 5.2.1
• Container or non-container:
• Container name / image:
• Operating System for non-container:
• PostgreSQL Version:
• Exporter(s) in use (incl. version):
• Prometheus version:
• AlertManager version:
• Grafana version: 10+