Disable input when typing into a text field. (#2140)

Closes #2139

src/backend/backend.cpp

@@ -117,6 +117,7 @@ namespace big
 		while (g_running)
 		{
 			looped::hud_transition_state();
+			looped::hud_disable_input();
 			looped::session_pop_multiplier_areas();
 			looped::session_force_thunder();
 			looped::session_randomize_ceo_colors();