qmlsc: compile error with === or !== against undefined or null

Window {
    property var foo
    Component.onCompleted: {
        console.log(foo !== null)
        console.log(foo === null)
        console.log(foo !== undefined)
        console.log(foo == undefined)
    }
}

/home/user/tests/build-testing-Desktop_Qt_6_5_1_GCC_64bit-Debug/.rcc/qmlcache/quickcmake_main_qml.cpp:229: error: conversion from ‘bool’ to ‘QChar’ is ambiguous
/home/user/tests/build-testing-Desktop_Qt_6_5_1_GCC_64bit-Debug/.rcc/qmlcache/quickcmake_main_qml.cpp:229:8: error: conversion from ‘bool’ to ‘QChar’ is ambiguous
  229 | r2_2 = false;
      |        ^~~~~