test: Add unit tests for StatusBadgeV2 component

[Shahazadi-Shaguftha-Syed]

Description

StatusBadgeV2 component has no unit test coverage. This PR adds tests to verify the component renders correctly for different status types and entities.

Changes

• Add __tests__/StatusBadgeV2.test.tsx with tests covering:
  • Renders with ExperimentRun entity
  • Renders correct status text
  • Renders with tooltip
  • Renders error status

I'd like to work on this and submit a PR.