Count server-sent RST_STREAM STREAM_CLOSED as suspect streams towards the HTTP/2 connection close threshold.

This CL considers scenarios in which the GFE needs to send RST_STREAM
STREAM_CLOSED as suspicious, as these scenarios imply the client is sending
HEADERS or DATA on a stream after half-closing that stream. As discussed in
cl/568690849, these scenarios can count toward the existing threshold for
connection close (used for client-sent premature RST_STREAMs) because the GFE
will not be forwarding these frames to the backend.

This CL also performs a minor fix to consider the receipt of HEADERS on a
half-closed remote stream to be suspect (via newly closing with RST_STREAM
STREAM_CLOSED) even if that HEADERS does not have the END_STREAM flag set.

Tested:
  blaze test //gfe/gfe2/http2/e2e:end_to_end_test_http2 --test_filter=*DataFrameAfterHalfClosedRemote* --runs_per_test=2000
  http://sponge2/1f334d43-ce60-4531-b7b4-aea62075e6c3

Protected by FLAGS_gfe2_reloadable_flag_http2_record_suspect_rst_stream_closed and pre-existing --gfe2_reloadable_flag_http2_send_goaway_for_premature_rst_streams.

PiperOrigin-RevId: 568909684

build/source_list.bzl

diff --git a/build/source_list.bzl b/build/source_list.bzl
index bdb0b9e..9ca439c 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -1475,6 +1475,10 @@
     "quic/load_balancer/load_balancer_server_id_map_test.cc",
     "quic/load_balancer/load_balancer_server_id_test.cc",
 ]
+moqt_hdrs = [
+]
+moqt_srcs = [
+]
 binary_http_hdrs = [
     "binary_http/binary_http_message.h",
 ]

build/source_list.gni

diff --git a/build/source_list.gni b/build/source_list.gni
index ce279c6..d8978d9 100644
--- a/build/source_list.gni
+++ b/build/source_list.gni
@@ -1479,6 +1479,12 @@
     "src/quiche/quic/load_balancer/load_balancer_server_id_map_test.cc",
     "src/quiche/quic/load_balancer/load_balancer_server_id_test.cc",
 ]
+moqt_hdrs = [
+
+]
+moqt_srcs = [
+
+]
 binary_http_hdrs = [
     "src/quiche/binary_http/binary_http_message.h",
 ]

build/source_list.json

diff --git a/build/source_list.json b/build/source_list.json
index 5dffaf9..6dbfde3 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -1478,6 +1478,12 @@
     "quiche/quic/load_balancer/load_balancer_server_id_map_test.cc",
     "quiche/quic/load_balancer/load_balancer_server_id_test.cc"
   ],
+  "moqt_hdrs": [
+
+  ],
+  "moqt_srcs": [
+
+  ],
   "binary_http_hdrs": [
     "quiche/binary_http/binary_http_message.h"
   ],