Call Hierarchy child items aren't formatted correctly (default arguments are shown)

[sean-mcmanus]

See the screenshot. The root definition is formatted correctly but the children are not, which makes the arguments harder to read.

Repro code is like

#include <unordered_map>

int foo() { return 0; }

bool func(std::unordered_map<int, int> * d = nullptr)
{
    return foo() == 1;
}

The bug should be easy to fix by doing the formatting that is done for the root definition on the child items.

[michelleangela]

Before fix:

After fix:

[michelleangela]

Fix available in pre-release https://github.com/microsoft/vscode-cpptools/releases/tag/v1.17.1.