fix(s3stream): error callback (#1845)

Signed-off-by: Robin Han <[email protected]>

Author: superhx

s3stream/src/main/java/com/automq/stream/s3/S3Storage.java

@@ -486,7 +486,6 @@ public boolean append0(AppendContext context, WalWriteRequest request, boolean f
             if (ex != null) {
                 LOGGER.error("append WAL fail, request {}", request, ex);
                 storageFailureHandler.handle(ex);
-                return;
             }
             handleAppendCallback(request);
         });