Add integration test that validates the fix for GitHub discussion #7573.
The test verifies that:
- Entry names use path.Base() to get base filename only
- Path doubling bug is prevented when listing versioned objects
- Logical entries are created correctly with proper attributes
- .versions folder paths are handled correctly
This test documents the Velero/Kopia compatibility fix and prevents
regression of the path doubling bug.
chrislu
6047e5b3c8