fix: 修复表单禁用状态和加载逻辑问题

修复发货表单字段的禁用状态逻辑，移除多余的readonly属性
调整取消分卷操作的加载状态处理，确保在finally中重置状态
优化钢卷选择器组件，增加切边和包装筛选及显示列
将结算方式输入框改为下拉选择框，提升用户体验

klp-ui/src/views/wms/coil/panels/do.vue

@@ -768,10 +768,11 @@ export default {
         this.buttonLoading = true
         cancelSpecialSplit(row.actionId).then(response => {
           this.$message.success('取消分卷成功')
-          this.stepSpilt.loading = false
-          this.buttonLoading = false
           this.getPendingAction() // 刷新待操作列表
           this.getStepSplitList()
+        }).finally(() => {
+          this.stepSpilt.loading = false
+          this.buttonLoading = false
         })
       })
     },