fix(ci): select all versions in nvm migration test

The nvm migration test was selecting option "1" which picked up the
pre-installed system Node.js instead of the nvm-installed version.

Change to "all" so both system and nvm versions get migrated, then
verify that the nvm version (20.18.0) is among the migrated versions.

Author: CalvinAllen

.github/workflows/integration-test-migrate-node-ubuntu-nvm.yml

@@ -47,7 +47,8 @@ jobs:
       - name: "Migrate nvm Node.js to dtvem"
         run: |
           echo "=== Running migrate detection ==="
-          echo -e "1\n0\nn\n" | ./dist/dtvem migrate node || true
+          # Select "all" to migrate all detected versions (system + nvm)
+          echo -e "all\n0\nn\n" | ./dist/dtvem migrate node || true
           echo ""
           echo "=== Verifying migration ==="
           ./dist/dtvem list node