chore: remove tfo windows support

Golang officially decided not to open `internal/poll.execIO` to third-party libraries after 1.23 was released, so we can only choose to remove tfo support on the Windows platform.

adapter/inbound/listen.go

@@ -3,22 +3,10 @@ package inbound
 import (
 	"context"
 	"net"
-
-	"github.com/metacubex/tfo-go"
 )
 
-var (
-	lc = tfo.ListenConfig{
-		DisableTFO: true,
-	}
-)
-
-func SetTfo(open bool) {
-	lc.DisableTFO = !open
-}
-
 func SetMPTCP(open bool) {
-	setMultiPathTCP(&lc.ListenConfig, open)
+	setMultiPathTCP(getListenConfig(), open)
 }
 
 func ListenContext(ctx context.Context, network, address string) (net.Listener, error) {

adapter/inbound/listen_unix.go

@@ -0,0 +1,23 @@
+//go:build unix
+
+package inbound
+
+import (
+	"net"
+
+	"github.com/metacubex/tfo-go"
+)
+
+var (
+	lc = tfo.ListenConfig{
+		DisableTFO: true,
+	}
+)
+
+func SetTfo(open bool) {
+	lc.DisableTFO = !open
+}
+
+func getListenConfig() *net.ListenConfig {
+	return &lc.ListenConfig
+}

adapter/inbound/listen_windows.go

@@ -0,0 +1,15 @@
+package inbound
+
+import (
+	"net"
+)
+
+var (
+	lc = net.ListenConfig{}
+)
+
+func SetTfo(open bool) {}
+
+func getListenConfig() *net.ListenConfig {
+	return &lc
+}