Including QJSPrimitiveValue breaks consumer builds with -fno-operator-names

FAILED: autotests/CMakeFiles/ki18n-declarativetest.dir/ki18ndeclarativetest.cpp.o  
/usr/lib64/ccache/c++ -DKI18N_DEPRECATED_WARNINGS_SINCE=0x56700 -DKI18N_DISABLE_DEPRECATED_BEFORE_AND_AT=0x56700 -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS_SINCE=0x70000 -DQT_DISABLE_DEPRECATED_BEFORE=0x60400 -DQT_F
ORCE_ASSERTS -DQT_NETWORK_LIB -DQT_NO_CAST_TO_ASCII -DQT_NO_DEBUG -DQT_NO_FOREACH -DQT_NO_KEYWORDS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_URL_CAST_FROM_STRING -DQT_QMLINTEGRATION_LIB -DQT_QML_LIB -DQT_
STRICT_ITERATORS -DQT_TESTCASE_BUILDDIR=\"/home/nico/kde6/build/ki18n/autotests\" -DQT_TESTCASE_SOURCEDIR=\"/home/nico/kde6/src/ki18n/autotests\" -DQT_TESTLIB_LIB -DQT_USE_QSTRINGBUILDER -D_GNU_SOURCE -D_LARGEFI
LE64_SOURCE -I/home/nico/kde6/build/ki18n/autotests -I/home/nico/kde6/src/ki18n/autotests -I/home/nico/kde6/build/ki18n/autotests/ki18n-declarativetest_autogen/include -I/home/nico/kde6/build/ki18n/src/i18n -I/h
ome/nico/kde6/src/ki18n/src/i18n -isystem /home/nico/qt6/include/QtTest -isystem /home/nico/qt6/include -isystem /home/nico/qt6/include/QtCore -isystem /home/nico/qt6/mkspecs/linux-g++ -isystem /home/nico/qt6/in
clude/QtQml -isystem /home/nico/qt6/include/QtQmlIntegration -isystem /home/nico/qt6/include/QtNetwork -pipe -fno-operator-names -fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security -Wn
o-long-long -Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Werror=init-self -Werror=undef -Wvla -Wdate-time -Wsuggest-override -Wlogical-op -pedantic -Wzero-as-null-pointer-
constant -Wmissing-include-dirs -fdiagnostics-color=always -O2 -g -DNDEBUG -fvisibility=hidden -fvisibility-inlines-hidden -fPIC -std=c++17 -MD -MT autotests/CMakeFiles/ki18n-declarativetest.dir/ki18ndeclarative
test.cpp.o -MF autotests/CMakeFiles/ki18n-declarativetest.dir/ki18ndeclarativetest.cpp.o.d -o autotests/CMakeFiles/ki18n-declarativetest.dir/ki18ndeclarativetest.cpp.o -c /home/nico/kde6/src/ki18n/autotests/ki18
ndeclarativetest.cpp

In file included from /home/nico/qt6/include/QtQml/qjsmanagedvalue.h:8,

                 from /home/nico/qt6/include/QtQml/qjsengine.h:14,

                 from /home/nico/qt6/include/QtQml/qqmlengine.h:10,

                 from /home/nico/qt6/include/QtQml/QQmlEngine:1,

                 from /home/nico/kde6/src/ki18n/autotests/ki18ndeclarativetest.cpp:9:

/home/nico/qt6/include/QtQml/qjsprimitivevalue.h: In static member function 'static bool QJSPrimitiveValue::MulOperators::opOverflow(int, int, int*)':

/home/nico/qt6/include/QtQml/qjsprimitivevalue.h:98:28: error: expected ')' before 'xor'

   98 |             if (((lhs < 0) xor (rhs < 0)) && (*result == 0))

      |                            ^~~

/home/nico/qt6/include/QtQml/qjsprimitivevalue.h:98:17: note: to match this '('

   98 |             if (((lhs < 0) xor (rhs < 0)) && (*result == 0))

      |                 ^

/home/nico/qt6/include/QtQml/qjsprimitivevalue.h:99:28: error: expected ')' before ';' token

   99 |                 return true; // result must be negative 0, does not fit into int

      |                            ^

/home/nico/qt6/include/QtQml/qjsprimitivevalue.h:98:16: note: to match this '('

   98 |             if (((lhs < 0) xor (rhs < 0)) && (*result == 0))

      |