style(ui): 统一弹窗及独立表单页按钮文案和样式调整

- 将所有弹窗及独立表单页中的“返回”按钮文案统一改为“取消”
- 独立表单页footer的Avue提交与清空按钮去除内置图标，仅保留文字显示
- 更新相关页面和组件按钮文案，包括业务表单、支付表单、客户档案等
- 规范底部操作栏按钮顺序及样式，确保主次操作区分明显
- 修复部分组件页脚按钮文案，保持全站一致性

src/views/business/components/master-order-detail.vue

@@ -1,7 +1,7 @@
 <template>
   <div v-loading="loading" class="master-detail">
     <section v-if="master" class="detail-overview">
-      <div class="detail-heading"><div><h2>多联总单详情 <span>|</span> {{ master.masterNo }}</h2><el-tag :type="statusType(master.businessStatus)" class="status-text">{{ statusName(master.businessStatus) }}</el-tag><el-tag v-if="transportFlowLabel" type="info" class="transport-flow-tag">{{ transportFlowLabel }}</el-tag></div><el-button @click="$emit('back')">返回</el-button></div>
+      <div class="detail-heading"><div><h2>多联总单详情 <span>|</span> {{ master.masterNo }}</h2><el-tag :type="statusType(master.businessStatus)" class="status-text">{{ statusName(master.businessStatus) }}</el-tag><el-tag v-if="transportFlowLabel" type="info" class="transport-flow-tag">{{ transportFlowLabel }}</el-tag></div><el-button @click="$emit('back')">取消</el-button></div>
       <dl class="detail-meta"><div><dt>客户</dt><dd>{{ master.customerName || '-' }}</dd></div><div><dt>合同编号</dt><dd>{{ master.contractNo || '-' }}</dd></div><div><dt>项目</dt><dd>{{ master.projectName || '-' }}</dd></div><div class="detail-meta__attachments"><dt>附件</dt><dd><template v-if="attachments.length"><el-link v-for="file in attachments" :key="file.url || file.link || file.name || file.originalName" type="primary" @click="previewAttachment(file)">{{ attachmentName(file) }}</el-link></template><span v-else>-</span></dd></div></dl>
       <div class="route-map"><template v-for="(route, index) in segments" :key="route.segmentNo"><div class="route-map__node"><span :class="['route-badge', index ? 'middle' : 'start']">{{ index ? '经' : '起' }}</span><strong>{{ route.departureName || '-' }}</strong><small>{{ route.departureAddress || '-' }}</small><small class="route-map__progress">{{ index ? `已到达 ${quantity(segments[index - 1].arrivedQuantity)}/${quantity(master.totalQuantity)}` : `已调度 ${quantity(route.dispatchedQuantity)}/${quantity(master.totalQuantity)}` }}</small><small v-if="index" class="route-map__progress">已调度 {{ quantity(route.dispatchedQuantity) }}/{{ quantity(master.totalQuantity) }}</small></div><div class="route-map__line"></div><div v-if="index === segments.length - 1" class="route-map__node"><span class="route-badge end">终</span><strong>{{ route.arrivalName || '-' }}</strong><small>{{ route.arrivalAddress || '-' }}</small><small class="route-map__progress">已到达 {{ quantity(route.arrivedQuantity) }}/{{ quantity(master.totalQuantity) }}</small></div></template></div>
     </section>