fix compilation error for old qt versions

Zhao Yuhang

2025-02-09 bc03db3759e0d8644e626adcbda066ccb2c30062

 src/core/CMakeLists.txt

@@ -6,6 +6,7 @@
set(_src
    qwkglobal.h
    qwkglobal_p.h
    qwkglobal.cpp
    windowagentbase.h
    windowagentbase_p.h
    windowagentbase.cpp