Reduce the flakiness of Bbr2DefaultTopologyTest.SimpleTransfer2RTTAggregationBytesB201 by allowing a higher loss rate in test.

PiperOrigin-RevId: 399477943

quic/core/congestion_control/bbr2_simulator_test.cc

diff --git a/quic/core/congestion_control/bbr2_simulator_test.cc b/quic/core/congestion_control/bbr2_simulator_test.cc
index 4c32ee0..c913a10 100644
--- a/quic/core/congestion_control/bbr2_simulator_test.cc
+++ b/quic/core/congestion_control/bbr2_simulator_test.cc
@@ -533,7 +533,7 @@
                    sender_->ExportDebugState().bandwidth_hi, 0.5f);
 
   if (GetQuicReloadableFlag(quic_fix_pacing_sender_bursts)) {
-    EXPECT_EQ(sender_loss_rate_in_packets(), 0);
+    EXPECT_LE(sender_loss_rate_in_packets(), 0.01);
   } else {
     EXPECT_LE(sender_loss_rate_in_packets(), 0.05);
   }