Add pr-review e2e test and speed up e2e tests (#37345)

- add pr-review e2e test
- speed up most tests by logging in via POST to avoid the login form,
login form is still exercised in a dedicated test
- speed up most tests be removing post-test cleanup, unnecessary because
each repo is created with a unique name
- misc parallelization and api call reduction
- total suite runtime is about the same as before

---------

Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tests/e2e/issue-project.test.ts

@@ -1,6 +1,6 @@
 import {env} from 'node:process';
 import {test, expect} from '@playwright/test';
-import {login, apiCreateRepo, apiCreateIssue, apiDeleteRepo, createProjectColumn, randomString} from './utils.ts';
+import {login, apiCreateRepo, apiCreateIssue, createProjectColumn, randomString} from './utils.ts';
 
 test('assign issue to project and change column', async ({page}) => {
   const repoName = `e2e-issue-project-${randomString(8)}`;
@@ -26,5 +26,4 @@ test('assign issue to project and change column', async ({page}) => {
   await columnCombo.locator('.ui.dropdown').click();
   await columnCombo.locator('.menu a.item', {hasText: 'In Progress'}).click();
   await expect(columnCombo.getByTestId('sidebar-project-column-text')).toHaveText('In Progress');
-  await apiDeleteRepo(page.request, user, repoName);
 });