fix: restore linux mingw client build and gm smoke

src/UserInterface/PythonApplicationWebPage.cpp

@@ -1,6 +1,8 @@
 #include "StdAfx.h"
 #include "PythonApplication.h"
 
+#if defined(_MSC_VER)
+
 #undef C8
 #include <wrl.h>
 #include <wil/com.h>
@@ -118,3 +120,29 @@ void CPythonApplication::HideWebPage()
 	else
 		SetCursorMode(CURSOR_MODE_HARDWARE);
 }
+
+#else
+
+bool CPythonApplication::IsWebPageMode()
+{
+	return false;
+}
+
+void CPythonApplication::ShowWebPage(const char* c_szURL, const RECT& c_rcWebPage)
+{
+	TraceError("WebView2 is not available in this build");
+}
+
+void CPythonApplication::MoveWebPage(const RECT& c_rcWebPage)
+{
+}
+
+void CPythonApplication::HideWebPage()
+{
+	if (m_pySystem.IsSoftwareCursor())
+		SetCursorMode(CURSOR_MODE_SOFTWARE);
+	else
+		SetCursorMode(CURSOR_MODE_HARDWARE);
+}
+
+#endif