refactor(core): move fitViewOnInit to node dimensions update

packages/core/src/container/Viewport/Transform.vue

@@ -3,7 +3,7 @@ import { useVueFlow } from '../../composables'
 import NodeRenderer from '../NodeRenderer/NodeRenderer.vue'
 import EdgeRenderer from '../EdgeRenderer/EdgeRenderer.vue'
 
-const { id, viewport, fitViewOnInitDone } = useVueFlow()
+const { viewport } = useVueFlow()
 </script>
 
 <script lang="ts">
@@ -15,11 +15,9 @@ export default {
 
 <template>
   <div
-    :key="`transform-${id}`"
     class="vue-flow__transformationpane vue-flow__container"
     :style="{
       transform: `translate(${viewport.x}px,${viewport.y}px) scale(${viewport.zoom})`,
-      opacity: fitViewOnInitDone ? undefined : 0,
     }"
   >
     <EdgeRenderer />