Merge pull request #8891 from ulleo/dev

feat(X-Pack): 调整数据填报保存小数字段的保留小数位数为8位

core/backend/src/main/java/io/dataease/provider/ext/MysqlExtDDLProvider.java

@@ -267,7 +267,7 @@ public class MysqlExtDDLProvider extends DefaultExtDDLProvider {
                     if (field.getAccuracy() != null && field.getAccuracy() >= 0) {
                         str.append(field.getAccuracy());
                     } else {
-                        str.append(4);
+                        str.append(8);
                     }
                     str.append(") ");
                     break;