feat(接口自动化): 修复场景变量获取环境ID失败导致的后续问题 #1005595

--bug=1005315 --user=宋天阳 【环境参数】串行执行场景，环境参数没引用到
https://www.tapd.cn/55049933/s/1031911

backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java

@@ -254,10 +254,13 @@ public class MsHTTPSamplerProxy extends MsTestElement {
 
         if (CollectionUtils.isNotEmpty(hashTree)) {
             for (MsTestElement el : hashTree) {
-                if (this.getEnvironmentId() == null || el.getEnvironmentId() == null) {
-                    el.setEnvironmentId(useEnvironment);
+                if(el.getEnvironmentId() == null){
+                    if(this.getEnvironmentId() == null){
+                        el.setEnvironmentId(useEnvironment);
+                    }else{
+                        el.setEnvironmentId(this.getEnvironmentId());
+                    }
                 }
-
                 el.toHashTree(httpSamplerTree, el.getHashTree(), config);
             }
         }