Make reset (both user initiated and ANSI RIS) show the primary buffer when in...

Make reset (both user initiated and ANSI RIS) show the primary buffer when in alternate screen mode. Issue 6325

sources/VT100Terminal.m

@@ -355,6 +355,7 @@ static const int kMaxScreenRows = 4096;
     if (userInitiated) {
         [_parser reset];
     }
+    [delegate_ terminalShowPrimaryBuffer];
     [delegate_ terminalResetPreservingPrompt:userInitiated];
 }