Application Metrics View is broken

[dfuchss]

Describe the bug

If you open the Application Metrics View of Artemis, you wont really get many metrics.

To Reproduce

Go to Application Metrics

Expected behavior

See current metrics

Screenshots

Which version of Artemis are you seeing the problem on?

7.5.0

What browsers are you seeing the problem on?

Firefox

Additional context

No response

Relevant log output

ERROR TypeError: t.garbageCollectorMetrics['jvm.gc.pause'] is undefined
    cs metrics-garbagecollector.component.html:72
    Angular 47
    RxJS 6
    Angular 18
    RxJS 10
    stopLoading loading-notification.service.ts:21
    Ue loading-notification.interceptor.ts:31
    RxJS 34