fix(window): show the window buttons in full screen on macOS (#2015)

Native full screen moves a window's buttons into the bar revealed with the menu bar, and a project tab shown in its group's full-screen Space has none, so the title bar's slot for them stayed empty. The title bar now draws them there while the window fills the screen: close closes that project's tab, the green button leaves full screen, and minimize is disabled.

src/platform/locales/en.json

@@ -196,6 +196,7 @@
   "window.caption.minimize": "Minimize",
   "window.caption.maximize": "Maximize",
   "window.caption.restore": "Restore Down",
+  "window.caption.exitFullScreen": "Exit Full Screen",
   "window.caption.close": "Close",
   "menu.help.keymapReference": "Keymap Reference",
   "menu.help.showLog": "{os, select, macos {Show Log in Finder} windows {Show Log in Explorer} other {Show Log in Files}}",

src/platform/locales/zh.json

@@ -196,6 +196,7 @@
   "window.caption.minimize": "最小化",
   "window.caption.maximize": "最大化",
   "window.caption.restore": "向下还原",
+  "window.caption.exitFullScreen": "退出全屏",
   "window.caption.close": "关闭",
   "menu.help.keymapReference": "快捷键参考",
   "menu.help.showLog": "{os, select, macos {在访达中显示日志} windows {在资源管理器中显示日志} other {在文件管理器中显示日志}}",