Change undecryptable_packets_ from QuicCircularDeque to std::deque. No functional change expected. This is the preparation to support out of order deletion.

PiperOrigin-RevId: 331783389
Change-Id: I11875ff1f362bcb82768f0535b75f6223a57503b

quic/core/quic_connection.h

diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index 9b62a98..f748e9c 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -1481,7 +1481,7 @@
   // established, but which could not be decrypted.  We buffer these on
   // the assumption that they could not be processed because they were
   // sent with the INITIAL encryption and the CHLO message was lost.
-  QuicCircularDeque<UndecryptablePacket> undecryptable_packets_;
+  std::deque<UndecryptablePacket> undecryptable_packets_;
 
   // Collection of coalesced packets which were received while processing
   // the current packet.