Syntax highlighting doesn't work for Qt related classes with clangd on Ubuntu

I try to use VS Code with Qt Extension Pack to work with Qt Widgets project, I can build the project and run/debug it successfully but syntax highlighting doesn't work for Qt related classes. My environment is as follows:

1) Ubuntu 24.04

2)  VS Code 1.102.0

3) Qt Extension Pack 1.2.0 ( Qt C++... 1.6.0)

4) C/C++ extension 1.26.3

5) clangd extension 0.2.0

6) CMake Tools extension 1.21.36

7) I have installed qt-6.4.1 using apt and VS Code successfully find a CMake qt kit from it.

VS Code can't find Qt related header files.