feat: remove getCurrentWindowId IPC event and related functionality for cleaner API

runtime-shared/lib/constants.ts

@@ -19,7 +19,6 @@ export enum IPC_EVENTS {
   APP_QUIT = 'app:quit',
   FILE_READ = 'file:read',
   FILE_WRITE = 'file:write',
-  GET_WINDOW_ID = 'get-window-id',
   CUSTOM_EVENT = 'custom:event',
   TIME_UPDATE = 'time:update',
   RENDERER_IS_READY = 'renderer-ready',