Avoid throwing exception in static constructor

VisualStudioInstanceFactory failures now occur in a context where they
are reported as test failures instead of test runner crashes.

src/VisualStudio/IntegrationTest/TestUtilities/VisualStudioInstanceFactory.cs

@@ -35,22 +35,18 @@ public sealed class VisualStudioInstanceFactory : IDisposable
         /// </summary>
         private static bool _firstLaunch = true;
 
-        static VisualStudioInstanceFactory()
+        public VisualStudioInstanceFactory()
         {
-            var majorVsProductVersion = VsProductVersion.Split('.')[0];
+            AppDomain.CurrentDomain.AssemblyResolve += AssemblyResolveHandler;
+            AppDomain.CurrentDomain.FirstChanceException += FirstChanceExceptionHandler;
 
+            var majorVsProductVersion = VsProductVersion.Split('.')[0];
             if (int.Parse(majorVsProductVersion) < 15)
             {
                 throw new PlatformNotSupportedException("The Visual Studio Integration Test Framework is only supported on Visual Studio 15.0 and later.");
             }
         }
 
-        public VisualStudioInstanceFactory()
-        {
-            AppDomain.CurrentDomain.AssemblyResolve += AssemblyResolveHandler;
-            AppDomain.CurrentDomain.FirstChanceException += FirstChanceExceptionHandler;
-        }
-
         private static void FirstChanceExceptionHandler(object sender, FirstChanceExceptionEventArgs eventArgs)
         {
             if (s_inHandler)