Change HeaderBlocksForStream from QuicDeque to std::list.
Change HeaderBlocksForStream from QuicDeque to std::list.

QuicDeque is std::deque in Google3 and base::circular_deque with initial
capacity of 3, neither of which easy on memory compared to std::list when they
only store a single element most of the time.

gfe-relnote: n/a, change to QUIC v99-only code.  Protected by existing disabled gfe2_reloadable_flag_quic_enable_version_99.
PiperOrigin-RevId: 260965695
Change-Id: I9e1ea94c5bd4ed84eb245b85406794a828cb3f39

google/quiche,google/quiche,google/quiche,google/quiche