Vue projects: feature-usage detection now uses a real Vue parser…

Fixed

• Vue projects: feature-usage detection now uses a real Vue parser instead of a simplified one, so `<script setup>`, mixed script blocks, and dynamically-computed event names are handled correctly (dynamic names are now surfaced for review instead of being silently skipped).
• Vue/Nuxt: tracking helpers used via auto-import (no explicit import statement) are now recognized correctly.