Verify gfe2_reloadable_flag_quic_do_not_clip_received_error_code.

https://b20020abe24cc000000000000000000001338000000fcc0ffffb900.proxy.googleprod.com/r/expr_browser.html#expr=%7Bvar%3D%22dc_code_count%3Acode_counters_total%3Asum%22%2Cjob%3D%22%2F.*_layer1_gfe.*%2F%22%2Cdc%3D%22vl%22%2Cname_of_code_point%3D%22%2Fquic_do_not_clip_received_error_code.*%2F%22%7D&grid&w=1533&yrange=%5B0%3A%5D

https://b20020a056008114c00000000000000001338000000fcc0ffffb900.proxy.googleprod.com/r/expr_browser.html#expr=%7Bvar%3D%22dc_code_count%3Acode_counters_total%3Asum%22%2Cjob%3D%22%2F.*_layer1_gfe.*%2F%22%2Cdc%3D%22wk%22%2Cname_of_code_point%3D%22%2Fquic_do_not_clip_received_error_code.*%2F%22%7D&grid&w=1533&yrange=%5B0%3A%5D

Protected by FLAGS_quic_reloadable_flag_quic_do_not_clip_received_error_code.

PiperOrigin-RevId: 343148631
Change-Id: I0ccd3f2eaf25b251b94df6bb4adc9b245f0a94f3
diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 1420eb0..c246877 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -42,7 +42,7 @@
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_disable_version_t050, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_disable_version_t051, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_discard_initial_packet_with_key_dropped, true)
-QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_do_not_clip_received_error_code, false)
+QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_do_not_clip_received_error_code, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_donot_reset_ideal_next_packet_send_time, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_enable_aead_limits, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_enable_mtu_discovery_at_server, false)