Need cheap monitor enumeration or lazy video modes for Bevy-style monitor sync

Moon Game Studio mirrors Bevy bevy_winit::system::create_monitors, which can call monitor enumeration from the event-loop sync path to keep monitor entities in sync.

With Milky2018/window@0.5.1 on macOS, available_monitors() constructs each MonitorHandle through monitor_from_display_id(), and that eagerly calls available_display_video_modes(display_id). In an mgstudio 2D example capture, sampling the process repeatedly shows the hot path:

winit_create_monitors_system
  -> @windowing.available_monitors()
  -> monitor_from_display_id
  -> available_display_video_modes
  -> SLDisplayCopyAllDisplayModes

This keeps the example runtime at ~100% CPU and blocks Bevy-equivalent screenshot gates. Mgstudio can avoid re-inserting its ECS Monitor component for unchanged monitor handles, but it cannot avoid the lower-level eager video-mode enumeration without diverging from Bevy/winit monitor-sync semantics.

Needed API/behavior:

• available_monitors() should be cheap enough to call from a Bevy-style monitor sync path.
• MonitorHandle construction should not enumerate all video modes unless video_modes() is actually requested, or the package should expose a separate cheap monitor enumeration API with native id, name, position, size, scale factor, and current mode only.
• MonitorHandle equality / identity should rely on native monitor identity and not force full video-mode enumeration.

Verification expectation:

• Running a Bevy-style monitor sync loop for a windowed mgstudio example should no longer spend frame time in SLDisplayCopyAllDisplayModes when monitor topology is unchanged.
• A 90-frame 2D example capture should not be CPU-bound by monitor video-mode enumeration.

Relevant local dependency code inspected in Milky2018/window@0.5.1:

macos/monitor.mbt::available_monitors()
macos/monitor.mbt::monitor_from_display_id()
macos/monitor.mbt::available_display_video_modes()

Start with macos/monitor.mbt, especially available_monitors(), monitor_from_display_id(), and available_display_video_modes(). Trace how monitor identity and video_modes() are used, then verify the chosen behavior with a Bevy-style monitor sync loop and a 90-frame 2D example capture; done means unchanged topology no longer spends frame time in SLDisplayCopyAllDisplayModes.