Log max_packet_length and header when failed to serialize packet.

PiperOrigin-RevId: 314369107
Change-Id: I19e4ba64e3255f2274c12bf9125afa658c1b4767

quic/core/quic_packet_creator.cc

diff --git a/quic/core/quic_packet_creator.cc b/quic/core/quic_packet_creator.cc
index 83da774..58d1748 100644
--- a/quic/core/quic_packet_creator.cc
+++ b/quic/core/quic_packet_creator.cc
@@ -762,7 +762,11 @@
              << " at encryption_level: " << packet_.encryption_level
              << ", needs_full_padding_: " << needs_full_padding_
              << ", packet_.num_padding_bytes: " << packet_.num_padding_bytes
-             << ", pending_padding_bytes_: " << pending_padding_bytes_;
+             << ", pending_padding_bytes_: " << pending_padding_bytes_
+             << ", latched_hard_max_packet_length_: "
+             << latched_hard_max_packet_length_
+             << ", max_packet_length_: " << max_packet_length_
+             << ", header: " << header;
     return;
   }