Remove unused Alert import in VFolderNodes.tsx

[ironAiken2]

Summary

Alert is imported from antd in react/src/components/VFolderNodes.tsx but has no remaining references. The last usage was removed in commit 0ca1f8b1d (FR-2819 / #7370) without cleaning up the import line.

Why this matters

The strict pre-commit hook (eslint ./src --max-warnings=0 via lint-staged) lints the entire react/src tree, not just staged files. This pre-existing no-unused-vars warning on main therefore blocks unrelated commits across the repo until cleaned up. It surfaced while amending an unrelated feature PR (FR-26 / #7455).

Change

• react/src/components/VFolderNodes.tsx — drop Alert from the antd import. Import-only removal, no runtime behavior change.

Notes

• Split into its own PR (chore(FR-2917): remove unused Alert import in VFolderNodes.tsx #7469) to keep the FR-26 PR (feat(FR-26): show error state on ProjectSelect when no accessible projects #7455, stacked on top) scope-clean.
• Incidental repository hygiene; no functional/UX impact.

JIRA Issue: FR-2917