Lag when generating targets immediately after switching kits

环境：
Win10+MinGW
GCC 13.2
Clang 18.1.1
cmake 3.29
VS 2022 17.9.5
VSCode 1.87.2
ms-vscode.cmake-tools 1.17.17
ms-vscode.cpptools 1.19.9

复现步骤：
1. 随便创建一个cmake项目
2. 在状态栏中切换编译套件，然后马上点生成目标

在来回切换编译套件并马上生成目标时，就会出现卡顿，响应很慢，此时VSCode的CPU占用率比较高。


Start by reproducing the lag in a minimal CMake project using the listed Windows, compiler, CMake, VS Code, and extension versions. Focus on the sequence of switching kits and immediately generating targets; done means that repeated sequence no longer causes the reported slow response and high CPU usage.

Written by the indexing model from the issue text.