Tracing External URL Incorrect

Clicking on the Distributed Tracing link within Kiali results in being sent to a non-existent URL:

https://tracing.bigbang.dev/explore?left={%22queries%22:[{%22datasource%22:{%22type%22:%22tempo%22},%22queryType%22:%22nativeSearch%22}]}

It looks like there are two issues at play:

• The external_url is incorrect in package values

• There is nothing overriding the value at the umbrella level like what is done with the external_url value for grafana

It's worth noting that Tempo no longer has a UI component so I'm not sure if that external_url for tracing should only exist if Jaeger is deployed or if it needs to simply point elsewhere.

The end goal of this fix would be either that link doesn't show up or it does, but it resolves to the correct url.