fix(snap-test): restore blank line in migration-nvmrc-node-alias snap

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: naokihaba

packages/cli/snap-tests-global/migration-nvmrc-node-alias/snap.txt

@@ -1,6 +1,7 @@
 > vp migrate --no-interactive # 'node' alias should be mapped to lts/* with an info message
 VITE+ - The Unified Toolchain for the Web
 
+
 "node" in .nvmrc is not a specific version; automatically mapping to "lts/*"
 ◇ Migrated . to Vite+<repeat>
 • Node <semver>  pnpm <semver>