* fix: make `$` and `$$` selectors generic
This means, much like TS's in built `querySelector` type, you can now do:
```ts
const listItems = page.$$<HTMLLIElement>('ul li');
```
And/or:
```ts
const h2 = page.$<HTMLHeadingElement>('h2');
```
And the return value will be of type `ElementHandle<T>|null`, where `T`
is the type you provided. By default `T` is an `Element`, so you don't
have to provide this if you don't care as a consumer about the exact
type you get back.
* chore: fix test assertions
This corresponds to Chromium 89.0.4389.0.
This roll includes:
- Add `SameParty` attribute to cookies
https://crrev.com/c/2598846
- Anchor `target=_blank` implies `rel=noopener`
https://crrev.com/c/1630010
- Don’t expect ignored elements in the AXTree
https://crrev.com/c/2505362
BREAKING CHANGE: The built-in `aria/` selector query handler doesn’t return ignored elements anymore.
Issue: #6758
This commit adds a new built-in handler for querying by accessible name and role (#6307).
Support for waitForSelector will be added in a follow-up commit.
