CMake configure runs in an infinite loop when a project contains vcpkg.json.

Steps to reproduce:

• install vcpkg on your system and add it to the system PATH, vcpkg executable has to be on the system PATH, so QtCreator's auto-setup.cmake can find it
• create cmake based shared library project
• copy vcpkg.json into the project's root folder
• open Project View and click Re-configure with Initial Parameters
• until now is everything ok
• now click Advanced to show advanced cmake properties and check CMAKE_VERBOSER_MAKEFILE ( it can be any other bool property and maybe also other type properties )
• click Apply Configuration Changes and boom infinite loop, now you have to restart QtCreator or close project to stop it

I have attached a simple example of the vcpkg.json file.

It is only reproducible on Linux, now I have tried to reproduce it on Windows with msvc compiler and it works well.

But on Windows exists a similar problem with cmake infinite loop, I'm going to create an issue for that too.

Compiler used was gcc 10.3