Rename quic::kMaxPacketSize to quic::kMaxOutgoingPacketSize

As part of cl/242197597, QUIC now has separate values for maximum incoming and outgoing packet sizes. This CL renames the constant to be clearer.

gfe-relnote: constant rename, no functional impact
PiperOrigin-RevId: 242708648
Change-Id: I3f440ba44b9c12394026116aaecdd2c166cc63b6
diff --git a/quic/core/quic_trace_visitor_test.cc b/quic/core/quic_trace_visitor_test.cc
index ee179bb..1a58153 100644
--- a/quic/core/quic_trace_visitor_test.cc
+++ b/quic/core/quic_trace_visitor_test.cc
@@ -16,7 +16,7 @@
 namespace quic {
 namespace {
 
-const QuicByteCount kTransferSize = 1000 * kMaxPacketSize;
+const QuicByteCount kTransferSize = 1000 * kMaxOutgoingPacketSize;
 const QuicByteCount kTestStreamNumber = 3;
 const QuicTime::Delta kDelay = QuicTime::Delta::FromMilliseconds(20);