refactor(ctr): 优化合同创建页面逻辑

- 添加 active.value 的日志输出，便于调试
- 调整 back 函数，增加日志输出并更新表单步骤
- 简化 resetForm 函数，移除不必要的逻辑

src/views/ctr/index.vue

@@ -217,6 +217,8 @@ const onUploadSuccess = (data) => {
     fileList.value = data
 }
 const back = async (reset) => {
+    console.log(active.value);
+
     if (reset) {
         await ElMessageBox.confirm('返回上一步将清空目前填写的内容，确定返回？', '提示', {
             confirmButtonText: '确定',
@@ -231,6 +233,8 @@ const back = async (reset) => {
     } else {
         active.value--;
     }
+    console.log(active.value);
+
     form.value.step = active.value;
 
 };
@@ -273,10 +277,8 @@ const resetForm = () => {
     fileList.value = [];
     tempFileList.value = [];
     contract_type.value = '';
-    active.value = 0;
     setTimeout(() => {
         localStorage.removeItem("tempContractForm");
-
     }, 0);
 };
 const submitForm = async () => {