Syntax highlighting broken after member function with requires clause with less comparison

[alexr00]

Checklist

• This problem exists even with the setting "C_Cpp.enhancedColorization": "Disabled"

If Disabling that^ makes the problem go away, then follow this to make an issue on the C++ extension:
https://github.com/microsoft/vscode-cpptools/issues/new/choose

The code with a problem is:

template <int n>
struct S{        
    int foo() requires(n == 2)
    {
        return 2;
    }

        
    int foo() requires(n < 2)
    {
        return 2;
    }

private:
    int b;
};

The syntax highlighting is completely broken after the second requires clause:

It looks like:

It should look like:

The syntax highlighting should continue to work as normal, as it does if you replace the < with >:

Originally from @lukas-lang in microsoft/vscode#185728