Status doesn't present related applications when selector used

[Nicolas Vinuesa]

According to `juju status`'s help:

When an entity that matches <selector> is related to other applications, the
status of those applications will also be presented.

But it doesn't present these related applications:

$ juju status --relations
Model Controller Cloud/Region Version SLA Timestamp
default ctrl-local localhost/localhost 3.0.3.1 unsupported 12:14:40+01:00

App Version Status Scale Charm Channel Rev Exposed Message
grafana maintenance 1 grafana stable 59 no installing charm software
prometheus2 active 1 prometheus2 stable 33 no Ready

Unit Workload Agent Machine Public address Ports Message
grafana/0* maintenance executing 1 10.87.136.136 (install) installing charm software
prometheus2/0* active idle 0 10.87.136.56 9090,12321/tcp Ready

Machine State Address Inst id Base AZ Message
0 started 10.87.136.56 juju-2f44ad-0 ubuntu@22.04 Running
1 started 10.87.136.136 juju-2f44ad-1 ubuntu@20.04 Running

Relation provider Requirer Interface Type Message
prometheus2:grafana-source grafana:grafana-source grafana-source regular

(as seen the relation is already set between prometheus2 and grafana)

but when I run:

$ juju status prometheus2
Model Controller Cloud/Region Version SLA Timestamp
default ctrl-local localhost/localhost 3.0.3.1 unsupported 12:16:28+01:00

App Version Status Scale Charm Channel Rev Exposed Message
prometheus2 active 1 prometheus2 stable 33 no Ready

Unit Workload Agent Machine Public address Ports Message
prometheus2/0* active idle 0 10.87.136.56 9090,12321/tcp Ready

Machine State Address Inst id Base AZ Message
0 started 10.87.136.56 juju-2f44ad-0 ubuntu@22.04 Running

or

$ juju status grafana
Model Controller Cloud/Region Version SLA Timestamp
default ctrl-local localhost/localhost 3.0.3.1 unsupported 12:20:14+01:00

App Version Status Scale Charm Channel Rev Exposed Message
grafana maintenance 1 grafana stable 59 no Installing deb pkgs

Unit Workload Agent Machine Public address Ports Message
grafana/0* maintenance executing 1 10.87.136.136 (install) Installing deb pkgs

Machine State Address Inst id Base AZ Message
1 started 10.87.136.136 juju-2f44ad-1 ubuntu@20.04 Running

I only see the selected application using selector but not the related application.

Version:
$ juju version
3.0.3-ubuntu-amd64

[Jordan Barrett (barrettj12)]

+1 for this, makes sense that we'd want to see the relations for the given application.

@nvinuesa can you check if this issue exists in 2.9-latest as well? If so, we'd probably want to target the fix to 2.9.