[MM-48080] Update tray icon instantly when the settings change (#2376)

* Update wording and update tray icon instantly when the settings change

* Add tests

* Include new file

src/main/app/config.test.js

@@ -41,7 +41,9 @@ jest.mock('main/AutoLauncher', () => ({
 jest.mock('main/badge', () => ({
     setUnreadBadgeSetting: jest.fn(),
 }));
-jest.mock('main/tray/tray', () => ({}));
+jest.mock('main/tray/tray', () => ({
+    refreshTrayImages: jest.fn(),
+}));
 jest.mock('main/windows/windowManager', () => ({
     handleUpdateConfig: jest.fn(),
     sendToRenderer: jest.fn(),

src/main/app/config.ts

@@ -67,6 +67,10 @@ export function handleConfigUpdate(newConfig: CombinedConfig) {
     setLoggingLevel(newConfig.logLevel as LogLevel);
 
     handleUpdateMenuEvent();
+    if (newConfig.trayIconTheme) {
+        refreshTrayImages(newConfig.trayIconTheme);
+    }
+
     ipcMain.emit(EMIT_CONFIGURATION, true, newConfig);
 }