fix timeout timeunit

Author: Thomasr

server/api-service/lowcoder-sdk/src/main/java/org/lowcoder/sdk/webclient/WebClientBuildHelper.java

@@ -95,8 +95,8 @@ public Builder toWebClientBuilder() {
                 .responseTimeout(Duration.ofMillis(timeoutMs))
                 .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, timeoutMs.intValue())
                 .doOnConnected(conn -> conn
-                    .addHandlerLast(new ReadTimeoutHandler(timeoutMs, TimeUnit.SECONDS))
-                    .addHandlerLast(new WriteTimeoutHandler(timeoutMs, TimeUnit.SECONDS)));
+                    .addHandlerLast(new ReadTimeoutHandler(timeoutMs, TimeUnit.MILLISECONDS))
+                    .addHandlerLast(new WriteTimeoutHandler(timeoutMs, TimeUnit.MILLISECONDS)));
         }
 
         if (sslConfig != null) {