Intellisense does not work as expected when too many header files included

Bug type: Language Service

Describe the bug

• OS and Version: Windows 11 22000
• VS Code Version: 1.63.2 (I have tried the insider version, the results are the same)
• C/C++ Extension Version: 1.7.1
• If using SSH remote, specify OS of remote machine: I use Remote - WSL and the OS of WSL2 Ubuntu 20.04
• A clear and concise description of what the bug is, including information about the workspace (i.e. is the workspace a single project or multiple projects, size of the project, etc).

I was working on a gazebo plugin for ROS2. In some source files, the Intellisense stops work properly. After some attempts, I found a minimum source file to reproduce the problem:

#include <gazebo/common/Plugin.hh>

static double test(void)
{
    double aaaa = 1.0, bbbb=2.0;
    double c = aa // Use hot key here to get suggestion list from Intellisense
}

When the header file <gazebo/common/Plugin.hh>(https://github.com/arpg/Gazebo/blob/master/gazebo/common/Plugin.hh) is not included, the Intellisense works as expected. However, if <gazebo/common/Plugin.hh> is included, the Intellisense still works but not as expected, as shown in the following images:

Good:

Bad:

Then I tried expanding the <gazebo/common/Plugin.hh>. It seems the problem is not caused by a specific header file, but the number of header files. When too many header files are included, Intellisense stops work as expected, as shown in the following images:

Good:

Still good:

Bad:

I have tried setting Intellisense memory limit and cache size:

"C_Cpp.intelliSenseMemoryLimit": 16384,
"C_Cpp.intelliSenseCacheSize": 100000000000,

No thing changed.