MM-63411 Don't focus thread textbox automatically when it has a draft (#31250)

* MM-63411 Don't focus thread textbox automatically when it has a draft

* Add E2E test

* Add test files forgotten in previous commit

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/cypress/tests/support/chai.d.ts

@@ -0,0 +1,12 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/// <reference types="cypress" />
+
+declare namespace Cypress {
+    interface Chainer<Subject> {
+        (chainer: 'be.focusVisible', {exactStyles}: {exactStyles?: boolean}): Chainable<Subject>;
+
+        (chainer: 'not.be.focusVisible', {exactStyles}: {exactStyles?: boolean}): Chainable<Subject>;
+    }
+}