Fix: patch unit_test.h to use dead template for test bodies

patches/0002-suppress-unit-tests.patch

@@ -0,0 +1,15 @@
+--- a/unit_test.h
++++ b/unit_test.h
+@@ -53,9 +53,10 @@
+
+ #else
+
++// Dead template: body parsed but never instantiated → never compiled
+ #define TEST_BEGIN__(text, file, line)                                         \
+-  namespace UnitTest##line {                                                   \
+-    static void Test() {
++  namespace DeadTest##line {                                                   \
++    template<bool _dummy=false> static void Test() {
+
+ #define TEST_END                                                               \
+   }                                                                            \