fix: render decimal values without scientific notation

Author: Zxc4wonder

backend/framework/src/main/java/org/jumpserver/chen/framework/datasource/base/BaseSQLActuator.java

@@ -232,7 +232,11 @@ protected Object normalizeJdbcValue(Object value) throws SQLException {
             return temporalValue;
         }
 
-        if (value instanceof Long || value instanceof BigDecimal || value instanceof BigInteger) {
+        if (value instanceof BigDecimal decimal) {
+            return decimal.toPlainString();
+        }
+
+        if (value instanceof Long || value instanceof BigInteger) {
             return value.toString();
         }