fix(接口定义): 修复推荐jsonpath断言索引超过10无法生成预期的缺陷

--bug=1021925 --user=王孝刚
[接口测试]GitHub#21303断言规则适用JSONPath推荐方式，当列表索引值超过10，期望值无法自动填写
https://www.tapd.cn/55049933/s/1327710

api-test/frontend/src/business/definition/components/assertion/ApiJsonpathSuggest.vue

@@ -139,7 +139,7 @@ export default {
       let param = params[index];
       let childObj;
 
-      let reg = /\[\d\]$/;
+      let reg = /\[[0-9]+\]$/;
       let regIndex = param.search(reg);
       if (regIndex > -1) {
         let paramName = param.substring(0, regIndex);

framework/sdk-parent/frontend/src/components/environment/assertion/ApiJsonpathSuggest.vue

@@ -135,7 +135,7 @@ export default {
       let param = params[index];
       let childObj;
 
-      let reg = /\[\d\]$/;
+      let reg = /\[[0-9]+\]$/;
       let regIndex = param.search(reg);
       if (regIndex > -1) {
         let paramName = param.substring(0, regIndex);