fix(dcc upload): fix overlay

<template>

  <div>

    <div class="drop-overlay" v-show="dropActive">

    <v-dialog

      v-model="dropActive"

      persistent

      color="transparent"

      width="0"

    >

      <div class="drop-overlay">

        <div>

          <v-icon>cloud_upload</v-icon>

          <h3>{{ $t("tool.upload.drop") }}</h3>

        </div>

      </div>

    </v-dialog>

    <div  v-show="dropActive">

    </div>

    <app-loader v-model="loading" />