Fix corrupted JSON caused by goccy library (#37214) (#37220)

Backport #37214

The only conflict is go.mod

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

modules/json/jsongoccy.go

@@ -1,35 +0,0 @@
-// Copyright 2025 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package json
-
-import (
-	"bytes"
-	"io"
-
-	"github.com/goccy/go-json"
-)
-
-var _ Interface = jsonGoccy{}
-
-type jsonGoccy struct{}
-
-func (jsonGoccy) Marshal(v any) ([]byte, error) {
-	return json.Marshal(v)
-}
-
-func (jsonGoccy) Unmarshal(data []byte, v any) error {
-	return json.Unmarshal(data, v)
-}
-
-func (jsonGoccy) NewEncoder(writer io.Writer) Encoder {
-	return json.NewEncoder(writer)
-}
-
-func (jsonGoccy) NewDecoder(reader io.Reader) Decoder {
-	return json.NewDecoder(reader)
-}
-
-func (jsonGoccy) Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
-	return json.Indent(dst, src, prefix, indent)
-}

modules/json/jsonlegacy.go

@@ -11,7 +11,7 @@ import (
 )
 
 func getDefaultJSONHandler() Interface {
-	return jsonGoccy{}
+	return jsonV1{}
 }
 
 func MarshalKeepOptionalEmpty(v any) ([]byte, error) {

modules/validation/binding.go

@@ -5,12 +5,14 @@ package validation
 
 import (
 	"fmt"
+	"io"
 	"regexp"
 	"strings"
 
 	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/glob"
+	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/util"
 
 	"gitea.com/go-chi/binding"
@@ -31,8 +33,23 @@ const (
 	ErrInvalidBadgeSlug = "InvalidBadgeSlug"
 )
 
+type jsonProvider struct{}
+
+func (j jsonProvider) Marshal(v any) ([]byte, error) { return json.Marshal(v) }
+
+func (j jsonProvider) Unmarshal(data []byte, v any) error { return json.Unmarshal(data, v) }
+
+func (j jsonProvider) NewDecoder(reader io.Reader) binding.JSONDecoder {
+	return json.NewDecoder(reader)
+}
+
+func (j jsonProvider) NewEncoder(writer io.Writer) binding.JSONEncoder {
+	return json.NewEncoder(writer)
+}
+
 // AddBindingRules adds additional binding rules
 func AddBindingRules() {
+	binding.JSONProvider = jsonProvider{}
 	addGitRefNameBindingRule()
 	addValidURLListBindingRule()
 	addValidURLBindingRule()