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Add missing import for vue-resize styles

Changelog: fixed

vendor/assets/javascripts/vue-virtual-scroller/src/components/RecycleScroller.vue

@@ -59,6 +59,7 @@
 
 <script>
 import { ResizeObserver } from 'vue-resize'
+import 'vue-resize/dist/vue-resize.css'
 import { ObserveVisibility } from 'vue-observe-visibility'
 import ScrollParent from 'scrollparent'
 import config from '../config'