优化yaml导出测试

ruoyi-modules/management-platform/src/main/java/com/ruoyi/platform/utils/YamlUtils.java

@@ -115,6 +115,11 @@ public class YamlUtils {
     }
 
     public static boolean isNumeric(String str) {
-        return str.matches("-?\\\\d+(\\\\.\\\\d+)?"); // 匹配整数或小数，包括负数
+        try {
+            double num = Double.parseDouble(str);
+            return true;
+        } catch (NumberFormatException e) {
+            return false;
+        }
     }
 }