teach wil about c++/winrt exceptions by including cppwinrt.h (#2927)

It turns out that if you CATCH_LOG without including this file, and you
end up catching a C++/WinRT hresult_exception, IT TURNS IT INTO A
FAILFAST.

Fixes #2591.
Fixes #2881.
Fixes #2807.

src/cascadia/TerminalApp/lib/pch.h

@@ -18,6 +18,8 @@
 #undef GetCurrentTime
 #endif
 
+#include <wil/cppwinrt.h>
+
 #include <unknwn.h>
 
 #include <hstring.h>

src/cascadia/TerminalConnection/pch.h

@@ -15,6 +15,8 @@
 // Must be included before any WinRT headers.
 #include <unknwn.h>
 
+#include <wil/cppwinrt.h>
+
 #include "winrt/Windows.Foundation.h"
 #include "winrt/Windows.Security.Credentials.h"
 #include "winrt/Windows.Foundation.Collections.h"

src/cascadia/TerminalControl/pch.h

@@ -18,6 +18,8 @@
 #undef GetCurrentTime
 #endif
 
+#include <wil/cppwinrt.h>
+
 #include <unknwn.h>
 #include <winrt/Windows.Foundation.h>
 #include <winrt/Windows.Foundation.Collections.h>

src/cascadia/TerminalSettings/pch.h

@@ -19,4 +19,5 @@
 #endif
 
 #include <unknwn.h>
+#include <wil/cppwinrt.h>
 #include <winrt/Windows.Foundation.h>

src/cascadia/WindowsTerminal/pch.h

@@ -38,6 +38,9 @@ Abstract:
 #ifdef GetCurrentTime
 #undef GetCurrentTime
 #endif
+
+#include <wil/cppwinrt.h>
+
 // Needed just for XamlIslands to work at all:
 #include <winrt/Windows.system.h>
 #include <winrt/Windows.Foundation.Collections.h>