### RT-Thread Version master ### Hardware Type/Architectures gd32407v-lckfb ### Develop Toolchain Microsoft VScode ### Describe the bug 使用scons --cdb和scons --vsc后用vscode打开,clangd无法索引sys/types.h(该文件在rt-thread/components/libc/compilers/common/extension/sys/types.h),如果在生成的compile_commands.json中加上-Imy_path\rt-thread\\components\\libc\\compilers\\common\\extension就可以正常索引。gd32407v-lckfb和gd32470v-lckfb都有这个问题。  ### Other additional context _No response_