Post Lists Table: 'All' view not selected for paged responses

[kraftbj]

In [31828] ( see: #24869 ), a new is_base_request function is added to class-wp-posts-lists-table.php to indicate if the "All" view should have the current class associated with it, intentionally not including it when the view is filtered (by counting the $_GET array).

This should still select "All" when paging through that view.

Steps to reproduce:
Visit the Posts list (Posts->All Posts) and page to a second page.

Expected: "All" to still have the current class and reflect the applicable styling.

Actual: No "current" defined.

Least churn would be to unset $_GET['paged']. AFAIK, unset only impacts the local instance of a global, so we should be able to do that in one line without impacting anything else.

[wonderboymusic]

33923.2.diff​ doesn't modify the superglobal

[wonderboymusic]

In 34331:

Post List Table: 'All' view should be selected when appropriate for paged responses.

Props kraftbj, wonderboymusic.
Fixes #33923.