add quick isfixedsize

Zhao Yuhang

2023-12-20 74091e049e3975ac1b3c36768c5820f5604354dd

 src/core/CMakeLists.txt

@@ -13,6 +13,7 @@
    windowitemdelegate.cpp
    kernel/nativeeventfilter_p.h
    kernel/nativeeventfilter.cpp
    kernel/systemwindow_p.h
    contexts/abstractwindowcontext_p.h
    contexts/abstractwindowcontext.cpp
)