OCPBUGS-29528: List of default Camel K event sources disappears when adding a custom event source

[lokanandaprabhu]

Fixes: https://issues.redhat.com/browse/OCPBUGS-29528

Analysis / Root cause: If there is any Kamelet resource created for particular namespace, then only that resource is considered by ignoring kamelets resource available in global namespace and camel k operator namespace

Solution Description: With this change, kamelets resource from particular namespace, global namespace and camel k operator namespace are considered with unique check for metadata.uid to avoid duplicated

Screen shots / Gifs for design review:

--- Before---

https://github.com/openshift/console/assets/102503482/c045effc-3388-43d9-a431-139072353f66

---After---

https://github.com/openshift/console/assets/102503482/9a1d818c-243f-4444-9d04-e90617219109

Unit test coverage report: NA

Test setup:

1. install global Camel K operator in operator namespace (e.g. openshift-operators)
2. list all available event sources in "default" user namespace and see all Kamelets listed as event sources/sinks
3. add a custom Kamelet custom resource to the default namespace
4. see the list of available event sources only listing the custom Kamelet and the default Kamelets are gone from that list

 For example of a custom Kamelet event source: Refer comments in https://issues.redhat.com/browse/OCPBUGS-29528

Browser conformance:

• [x] Chrome
• [ ] Firefox
• [ ] Safari
• [ ] Edge