no member named 'int8_t' in the global namespace

Problem:

Getting the following error when trying to build a basic new "Qt Widgets Application" via clang:

main.cpp:1:10: In included file: no member named 'int8_t' in the global namespace /usr/include/c++/13/cstdint:51:11: note: error occurred here

The error is shown in-front of line 1 in `main.cpp`:

#include "mainwindow.h" 

How to reproduce:

1. Open QtCreator
2. Create a new "Qt Widgets Application"
3. Choose "Desktop Qt 6.5.2 Clang 64bit" as the active development kit
4. You will find the error shown immediately from the language server

Notes:

1. Project folders are attached
2. A screenshot of the error is attached
3. The program compiles and runs fine, it's a language server generated error
4. This problem does not happen with "Desktop Qt 6.5.2 GCC 64bit"
5. Clang version is in the environment info