fix(接口测试): 修复场景中SQL步骤自定义数据源显示问题

--bug=1009124 --user=赵勇 【github#8654】场景用例里切换数据库名-保存，再进来看数据库名不是上次保存的数据库名 https://www.tapd.cn/55049933/s/1085725

backend/src/main/java/io/metersphere/api/dto/definition/parse/JMeterScriptUtil.java

@@ -84,9 +84,9 @@ public class JMeterScriptUtil {
     }
 
     private static void addItemHashTree(MsTestElement element, HashTree samplerHashTree, ParameterConfig config, String enviromentId) {
-        if (element != null && element.getEnvironmentId() == null) {
-            element.setEnvironmentId(enviromentId);
+        if (element != null) {
+            element.setEnvironmentId(element.getEnvironmentId() == null ? enviromentId : element.getEnvironmentId());
+            element.toHashTree(samplerHashTree, element.getHashTree(), config);
         }
-        element.toHashTree(samplerHashTree, element.getHashTree(), config);
     }
 }

backend/src/main/java/io/metersphere/api/exec/utils/GenerateHashTreeUtil.java

@@ -31,9 +31,12 @@ import java.util.Map;
 public class GenerateHashTreeUtil {
 
     public static MsScenario parseScenarioDefinition(String scenarioDefinition) {
-        MsScenario scenario = JSONObject.parseObject(scenarioDefinition, MsScenario.class);
-        parse(scenarioDefinition, scenario, scenario.getId(), null);
-        return scenario;
+        if(StringUtils.isNotEmpty(scenarioDefinition)) {
+            MsScenario scenario = JSONObject.parseObject(scenarioDefinition, MsScenario.class);
+            parse(scenarioDefinition, scenario, scenario.getId(), null);
+            return scenario;
+        }
+        return null;
     }
 
     public static void parse(String scenarioDefinition, MsScenario scenario, String id, String reportType) {

frontend/src/business/components/api/automation/scenario/component/ApiComponent.vue

@@ -364,7 +364,7 @@ export default {
           }
         }
       }
-      if (databaseConfigsOptions.length > 0) {
+      if (databaseConfigsOptions.length > 0 && this.request.environmentId !== this.environment.id) {
         this.request.dataSourceId = databaseConfigsOptions[0].id;
         this.request.environmentId = this.environment.id;
       }
@@ -639,7 +639,7 @@ export default {
 
     clickResource(resource) {
       if (resource.refType && resource.refType === 'API') {
-        if(resource.protocol==='dubbo://'){
+        if (resource.protocol === 'dubbo://') {
           resource.protocol = 'DUBBO'
         }
         let definitionData = this.$router.resolve({