[Story]: Add test coverage for kserve migration

[lucferbux]

Goal

Add jest to the backend and test the migration of kserve

Dependency issue

• https://github.com/opendatahub-io/odh-dashboard/issues/1975

Itemized goals

• Add Jest to the backend -> Update Already in main and the branch, no need to be done.
• Add unit testing coverage

Aspects continued elsewhere

No response

Mocks

No mocks

[dgutride]

Migrated to: https://issues.redhat.com/browse/RHOAIENG-555