feat(expect): support unordered text matching

[arnabnandy7]

Adds an ignoreOrder option to expect(locator).toHaveText() for cases where a collection’s contents matter but its DOM order does not.

When enabled, every expected string or regular expression must match exactly one distinct located element, and the collection lengths must remain equal. The implementation uses one-to-one matching instead of sorting, allowing it to correctly handle regular expressions, duplicate values, and overlapping matches such as [/foo/, 'foobar'].

Existing order-sensitive behavior remains unchanged by default. The option also retains Playwright’s web-first retries, text normalization, ignoreCase, useInnerText, and assertion diagnostics.

await expect(page.locator('li')).toHaveText(
  ['Pending', 'Complete'],
  { ignoreOrder: true },
);

Fixes #22275
Fixes #41803