fix：修复API数据源校验参数失败 (#15412)

Co-authored-by: taojinlong <jinlong@fit2cloud.com>

core/core-backend/src/main/java/io/dataease/datasource/server/DatasourceServer.java

@@ -1007,6 +1007,7 @@ public class DatasourceServer implements DatasourceApi {
 
     public ApiDefinition checkApiDatasource(Map<String, String> request) throws DEException {
         ApiDefinition apiDefinition = JsonUtil.parseObject(new String(java.util.Base64.getDecoder().decode(request.get("data"))), ApiDefinition.class);
+        apiDefinition.setType("table");
         if (request.keySet().contains("type") && request.get("type").equals("apiStructure")) {
             apiDefinition.setShowApiStructure(true);
         }