Refactor smart components

Co-authored-by: Fedor Indutny <79877362+indutny-signal@users.noreply.github.com>

ts/state/selectors/toast.ts

@@ -0,0 +1,11 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+import { createSelector } from 'reselect';
+import type { StateType } from '../reducer';
+import type { ToastStateType } from '../ducks/toast';
+
+export function getToastState(state: StateType): ToastStateType {
+  return state.toast;
+}
+
+export const getToast = createSelector(getToastState, ({ toast }) => toast);