tst_QStringApiSymmetry fails under ASAN (GenerationalCollator is leaked?)

169: Direct leak of 16 byte(s) in 1 object(s) allocated from:
169:     #0 0x7f406c6342f8 in operator new(unsigned long) ../../../../gcc-14.2.0/libsanitizer/asan/asan_new_delete.cpp:95
169:     #1 0x7f406ae49dee in qThreadStorage_localData<TestNamespace::(anonymous namespace)::GenerationalCollator> /home/peppe/projects/src/qt/qtbase/src/corelib/thread/qthreadstorage.h:76
169:     #2 0x7f406ae49c58 in localData /home/peppe/projects/src/qt/qtbase/src/corelib/thread/qthreadstorage.h:118
169:     #3 0x7f406ae4957e in TestNamespace::QCollator::defaultCompare(TestNamespace::QStringView, TestNamespace::QStringView) /home/peppe/projects/src/qt/qtbase/src/corelib/text/qcollator.cpp:362
169:     #4 0x7f406aef404a in TestNamespace::QString::localeAwareCompare_helper(TestNamespace::QChar const*, long long, TestNamespace::QChar const*, long long) /home/peppe/projects/src/qt/qtbase/src/corelib/text/qstring.cpp:6990
169:     #5 0x7f406aef3d44 in TestNamespace::QString::localeAwareCompare(TestNamespace::QString const&) const /home/peppe/projects/src/qt/qtbase/src/corelib/text/qstring.cpp:6969
169:     #6 0x56537476dbdd in TestNamespace::QString::localeAwareCompare(TestNamespace::QString const&, TestNamespace::QString const&) /home/peppe/projects/src/qt/qtbase/src/corelib/text/qstring.h:842
169:     #7 0x565374825b7d in void tst_QStringApiSymmetry::localeAwareCompare_impl<TestNamespace::QString, TestNamespace::QString>() /home/peppe/projects/src/qt/qtbase/tests/auto/corelib/text/qstringapisymmetry/tst_qstringapisymmetry.cpp:2044
169:     #8 0x5653747784cd in tst_QStringApiSymmetry::localeAwareCompare_QString_QString() /home/peppe/projects/src/qt/qtbase/tests/auto/corelib/text/qstringapisymmetry/tst_qstringapisymmetry.cpp:457