style(process-config): 优化流程配置页样式及结构一致性

- process-config.vue 基本信息区改用 section-card 和 el-form 组件，统一右侧固定宽 label 栅格布局
- 现行过程节点和节点设置区使用 section-card 包裹，替换原有灰色标题，增加白卡样式和卡片间距
- 删除不再使用的自定义样式 __section/__field/__field-label/__field-label--required，保留与节点表格相关样式
- 保证三个 section-card 正确闭合，编译通过，无业务逻辑变更
- master-order-detail.vue 主界面改用 section-card 代替 div 容器，提升风格统一性
- 注释部分 Element UI 弹窗表单项 margin-bottom 样式，减少样式冗余
- loading-manage.vue loading-detail 取消 flex gap，防止潜在样式冲突
- shipping-template.js 表单项 grid 栅格 span 值调整优化表单布局，使各项宽度分配更合理

src/option/business/shipping-template.js

@@ -56,7 +56,7 @@ export const option = {
       prop: 'templateCode',
       search: true,
       searchOrder: 4,
-      span: 8,
+      span: 6,
       order: 390,
       minWidth: 170,
       disabled: true,
@@ -67,7 +67,7 @@ export const option = {
       prop: 'templateName',
       search: true,
       searchOrder: 3,
-      span: 8,
+      span: 6,
       order: 380,
       minWidth: 150,
       rules: textRule('模板名称', 50, true),
@@ -78,7 +78,7 @@ export const option = {
       type: 'select',
       search: true,
       searchOrder: 2,
-      span: 8,
+      span: 6,
       order: 370,
       dicData: templateTypeOptions,
       minWidth: 120,
@@ -89,7 +89,7 @@ export const option = {
       prop: 'remark',
       type: 'textarea',
       minRows: 3,
-      span: 24,
+      span: 18,
       order: 360,
       minWidth: 180,
       maxlength: 200,
@@ -111,7 +111,7 @@ export const option = {
       formslot: true,
       search: true,
       searchOrder: 1,
-      span: 8,
+      span: 6,
       order: 340,
       minWidth: 150,
       rules: textRule('项目', 100, true),
@@ -120,7 +120,7 @@ export const option = {
       label: '客户合同',
       prop: 'contractName',
       formslot: true,
-      span: 8,
+      span: 6,
       order: 330,
       minWidth: 160,
       rules: textRule('客户合同', 100, true),
@@ -129,7 +129,7 @@ export const option = {
       label: '运输方式',
       prop: 'transportType',
       type: 'select',
-      span: 8,
+      span: 6,
       order: 320,
       dicData: transportTypeOptions,
       minWidth: 130,