Replace --gfe_reloadable_flag_quic_send_path_response with v2 flag and
unblock --gfe_reloadable_flag_quic_pass_path_response_to_validator.

Turn on gfe_reloadable_flag_quic_send_path_response in chromium.

Add FLAG_COUNT for gfe_reloadable_flag_quic_pass_path_response_to_validator. No behavior change.

PiperOrigin-RevId: 361878345
Change-Id: I7ddfea964cf1b5f2b2e38847dbb1058883ce2610
diff --git a/quic/core/quic_packet_creator.cc b/quic/core/quic_packet_creator.cc
index 82922f1..b374077 100644
--- a/quic/core/quic_packet_creator.cc
+++ b/quic/core/quic_packet_creator.cc
@@ -2070,7 +2070,7 @@
   }
 
   QUIC_DVLOG(1) << ENDPOINT << "Can't send PATH_RESPONSE now";
-  QUIC_RELOADABLE_FLAG_COUNT_N(quic_send_path_response, 5, 5);
+  QUIC_RELOADABLE_FLAG_COUNT_N(quic_send_path_response2, 5, 5);
   delete path_response;
   return false;
 }