查看发票按钮显示逻辑增加

apps/mobile/src/views/invoice/viewInvoice.vue

@@ -173,6 +173,7 @@
       <p class="b-desc" v-if="desc">{{ desc }}</p>
       <div class="j-button-group">
         <button
+           v-if="!(!this.url && btntext === '查看发票')"
           :class="{ 'j-button-confirm': true }"
           @click="confirm_ok"
           :disabled="btntext === '开票中'"