message: Update our use of Electron's `shell` API
diff: @@ -31,13 +31,13 @@ export class AppearanceSettings extends SettingsBase<AppearanceSettingsUi> {
  super(AppearanceSettingsUi, [GENERAL_CONFIG, SYSTEM_CONFIG]);
  this._log = getLogger(APPEARANCE_SETTINGS_TAG, this);
  this._getUi().$on("openUserTerminalThemesDir", () => {
  - shell.openItem(this._userTerminalThemeDirectory);
  + shell.showItemInFolder(this._userTerminalThemeDirectory);
  });
  this._getUi().$on("rescanUserTerminalThemesDir", () => {
  WebIpc.rescanThemes();
  });
  this._getUi().$on("openUserSyntaxThemesDir", () => {
  - shell.openItem(this._userSyntaxThemeDirectory);
  + shell.showItemInFolder(this._userSyntaxThemeDirectory);
  });
  this._getUi().$on("rescanUserSyntaxThemesDir", () => {
  WebIpc.rescanThemes();
  