chore(core): filter addition and removal changes

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>

examples/vite/src/Empty/EmptyExample.vue

@@ -1,6 +1,6 @@
 <script lang="ts" setup>
 import type { Node } from '@vue-flow/core'
-import { VueFlow, useVueFlow } from '@vue-flow/core/src/index'
+import { VueFlow, useVueFlow } from '@vue-flow/core'
 
 import { Background, BackgroundVariant } from '@vue-flow/background'
 import { Controls } from '@vue-flow/controls'