Update

vendor/github.com/go-json-experiment/json/options_format_global.go

@@ -0,0 +1,30 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package json
+
+import "sync/atomic"
+
+var globalEnableFormatTag atomic.Bool
+
+// ExperimentalGlobalSupportFormatTag globally enables
+// [ExperimentalSupportFormatTag] for all calls to
+// [Marshal], [MarshalWrite], [MarshalEncode],
+// [Unmarshal], [UnmarshalRead], or [UnmarshalDecode].
+//
+// WARNING: This is an experimental feature and will be removed in the future
+// as either a failed experiment or be formally included in "github.com/go-json-experiment/json"
+// in some semantically similar form, in which case, users of this option
+// must migrate to the officially supported feature.
+func ExperimentalGlobalSupportFormatTag(v bool) {
+	globalEnableFormatTag.Store(v)
+}
+
+func mayAppendSupportFormatTag(opts []Options) []Options {
+	if globalEnableFormatTag.Load() {
+		var optsArr [4]Options
+		opts = append(append(optsArr[:0], opts...), &enableFormatTag)
+	}
+	return opts
+}