fix: Side effects paths in package.json (#6634)

## Summary

This PR adds missing initializers path to side effects (because some
global variables are written in this file). It also fixes paths to
remaining files (as there is no longer `reanimated2` directory).

packages/react-native-reanimated/package.json

@@ -175,8 +175,9 @@
     }
   },
   "sideEffects": [
-    "./lib/module/reanimated2/layoutReanimation/animationsManager.js",
-    "./lib/module/reanimated2/core.js",
+    "./lib/module/layoutReanimation/animationsManager.js",
+    "./lib/module/core.js",
+    "./lib/module/initializers.js",
     "./lib/module/index.js"
   ],
   "packageManager": "yarn@4.1.1"