Typora for macOS adds Tahoe icon, restores share action, updates menus

Typora latest version, 1.12, for macOS introduces a Tahoe style icon with dark mode and custom color support. Context menus and the menu bar now follow the macOS 26 style with icons, and the 'Share' action is restored across all supported macOS versions. The 'window style' option is removed for macOS 26, now defaulting to seamless style.