Fix tint transition bug with high end monitor

How to test:

psdk debug skip_title --util=emulate_240hz

Script to put in plugins emulate_240Hz.rb

ScriptLoader.load_tool('GameLoader/Z_main')

def PSDK_CONFIG.vsync_enabled
  return false
end

module Graphics
  module_function
  def emulate_144Hz
    if @last_emulation_time
      d = Time.new - @last_emulation_time
      wait = 0.004166666666666667 - d
      sleep(wait) if wait > 0
    end
    @last_emulation_time = Time.new
  end
end
Graphics.on_start do
  win = Graphics.window
  def win.update
    super
    Graphics.emulate_144Hz
  end
  def win.update_no_input
    super
    Graphics.emulate_144Hz
  end
end

What's expected:

1. When loading save in 240Hz, we should never see black map with no only event when transition is proceeding
2. When warping with special transition (directed, circular, etc...) to a map with tint, we should not see the map before the transition actually display & finish