[upstream_utils] Add jart/json.cpp

upstream_utils/json_patches/0025-Make-bool-constructor-safe.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Peter Johnson <johnson.peter@gmail.com>
+Date: Mon, 6 Apr 2026 17:49:08 -0700
+Subject: [PATCH 25/25] Make bool constructor safe
+
+---
+ json.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/json.h b/json.h
+index 31c5ea39b67286df158a9d6e13ab5073498126b8..2746badf92a5bb4de6c38007d8e6dcfbed5b47eb 100644
+--- a/json.h
++++ b/json.h
+@@ -167,7 +167,7 @@ class json
+     {
+     }
+ 
+-    constexpr json(bool value) : type_(Type::Bool), bool_value(value)
++    constexpr json(std::same_as<bool> auto value) : type_(Type::Bool), bool_value(value)
+     {
+     }
+