Remove last remaining list() from core

Problem/Motivation

Per @longwave in #3324560: Replace strpos/substr with str_starts_with() / str_contains() / str_ends_with():

The out of scope change is due to PHPStorm automatically changing list() to [].

We fixed it once across core in #3222769: [November 8, 2021] Replace all list (array destructuring) assignment to the array syntax

Then it was accidentally reverted again in #3181778: [w/c September 17th] Replace t() with $this->t() in all plugins

[ayrton:drupal | Sun 19:26:03] $ grep -rE "\blist\(" * | grep -v "vendor" | grep -v "node_modules"
core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php:      list($entity_type, $entity_id) = explode('/', substr($uri, 7), 2);

Proposed resolution

Fix it in its own patch.