QE: Add Keys as one of the pages listing systems

[vandabarata]

What does this PR change?

Fixes the issue with thinking the page didn't load when we're actually listing Keys with system names, as seen here https://github.com/SUSE/spacewalk/issues/22338

Links

Fixes https://github.com/SUSE/spacewalk/issues/22338

• 4.2 https://github.com/SUSE/spacewalk/pull/22341
• 4.3 https://github.com/SUSE/spacewalk/pull/22340

[ ] DONE

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