Fix a few accessibility issues pointed out by David.

src/prefs/KeyConfigPrefs.cpp

@@ -285,6 +285,10 @@ void KeyConfigPrefs::PopulateOrExchange(ShuttleGui & S)
    if (mViewType == ViewByKey) {
       mFilterLabel->SetLabel(_("&Hotkey:"));
    }
+
+   // Need to layout so that the KeyView is properly sized before populating.
+   // Otherwise, the initial selection is not scrolled into view.
+   Layout();
 }
 
 void KeyConfigPrefs::RefreshBindings()