chore: update coverage config to use explicit include

vitest.config.ts

@@ -34,15 +34,7 @@ export default defineConfig({
     coverage: {
       provider: 'istanbul',
       reporter: ['text', 'html'],
-      exclude: [
-        ...configDefaults.coverage.exclude!,
-        // DOM transitions are tested via e2e so no coverage is collected
-        'packages/runtime-dom/src/components/Transition*',
-        // mostly entries
-        'packages/vue-compat/**',
-        'packages-private/**',
-        'scripts/**',
-      ],
+      include: ['packages/*/src/**'],
     },
   },
 })