feat: migrate custom macOS tray view to native one (#18981)

* restore stash

revert

some things work others dont

tracking area for rescue

manual popup

restore drag n drop

cleanup

* fix: make tray not block main process (#18880)

* fix: make tray not block main process

* make AtomMenuModel refcounted

* add support for ansi codes in title

add remove TODOs

* chore: use ScopedPumpMessagesInPrivateModes in tray (#18977)

* chore: use ScopedPumpMessagesInPrivateModes in tray

* revert refcounting of AtomMenuModel

* Prefer WeakPtr for posting tasks to handle unexpected destruction

* cleanup .h

* cleanup .mm

* add imports

add missing include

* fix: crash when tray popup called twice (#18999)

* remove highlightMode and TODOs

* remove unnecessary copy

shell/browser/ui/tray_icon.h

@@ -39,14 +39,6 @@ class TrayIcon {
   // status icon (e.g. Ubuntu Unity).
   virtual void SetToolTip(const std::string& tool_tip) = 0;
 
-  // Sets the status icon highlight mode. This only works on macOS.
-  enum class HighlightMode {
-    ALWAYS,    // Always highlight the tray icon
-    NEVER,     // Never highlight the tray icon
-    SELECTION  // Highlight the tray icon when clicked or the menu is opened
-  };
-  virtual void SetHighlightMode(HighlightMode mode);
-
 #if defined(OS_MACOSX)
   // Set/Get flag determining whether to ignore double click events.
   virtual void SetIgnoreDoubleClickEvents(bool ignore) = 0;