Remove fademode conditional from map screen

There's not really any good reason to prevent this action during a fade
animation. That just makes the fade timer one more potential contributor
to a softlock.

I'm leaving the fademode conditional on the Time Trial quick restart,
though - removing it would mean being able to quick restart during a
fade-in, and thus being able to spam Enter over and over to keep
re-starting the fade animation, which looks goofy.

desktop_version/src/Input.cpp

@@ -2018,7 +2018,7 @@ void gameinput()
             graphics.oldmenuoffset -= 10;
         }
     }
-    else if (game.intimetrial && graphics.fademode==0)
+    else if (game.intimetrial && graphics.fademode == 0)
     {
         //Quick restart of time trial
         graphics.fademode = 2;
@@ -2026,7 +2026,11 @@ void gameinput()
         music.fadeout();
         game.quickrestartkludge = true;
     }
-    else if (graphics.fademode==0)
+    else if (game.intimetrial)
+    {
+        //Do nothing if we're in a Time Trial but a fade animation is playing
+    }
+    else
     {
         //Normal map screen, do transition later
         game.gamestate = MAPMODE;