Add timeout to extension tests

tests/extension.spec.ts

@@ -10,6 +10,7 @@ test('content script', async ({ page, context }) => {
  await expect(shadowHTML).toContain('Pressedatenbank wird aufgerufen...')
  // library login page is opened in a new tab
  // but not as a popup from current page, instead via the background script
+ await page.waitForTimeout(300)
  const pages = context.pages()
  console.log(pages.map(p => p.url()))
  const newPage = pages.find(p => p.url().indexOf('https://www.voebb.de/oidcp/authorize') !== -1)
@@ -22,6 +23,7 @@ test('popup page', async ({ page, extensionId, context }) => {
  const settingsLink = await page.locator('#settings')
  await expect(settingsLink).toHaveText('Einstellungen')
  await settingsLink.click()
+ await page.waitForTimeout(300)
  const pages = context.pages()
  console.log(pages.map(p => p.url()))
  const newPage = pages.find(p => p.url().indexOf(`chrome-extension:https://${extensionId}/options/options.html`) !== -1)