Rename QuicConnection::RetransmitZeroRttPackets() to MarkZeroRttPacketsForRetransmission() because the method doesn't actually retransmit the data.

Name change only. not protected.

PiperOrigin-RevId: 320082765
Change-Id: I407bfbbd66d4b52fd807a1c914b279d23fc37823
diff --git a/quic/core/quic_connection_test.cc b/quic/core/quic_connection_test.cc
index 4e5bc8c..f3fa7b9 100644
--- a/quic/core/quic_connection_test.cc
+++ b/quic/core/quic_connection_test.cc
@@ -4553,7 +4553,7 @@
 
   SendStreamDataToPeer(2, "bar", 0, NO_FIN, nullptr);
   EXPECT_FALSE(notifier_.HasLostStreamData());
-  connection_.RetransmitZeroRttPackets();
+  connection_.MarkZeroRttPacketsForRetransmission();
   EXPECT_TRUE(notifier_.HasLostStreamData());
 }