Issue #3244570 by voleger, xjm, alexpott, longwave, andypost: Deprecate drupal_rewrite_settings()

core/includes/install.inc

core/lib/Drupal/Core/Installer/Form/SiteSettingsForm.php

core/lib/Drupal/Core/Site/SettingsEditor.php

core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php

core/phpstan-baseline.neon

...ts/Drupal/FunctionalTests/Installer/InstallerTestBase.php

...rupal/KernelTests/Core/Site/LegacySettingsRewriteTest.php

...ests/Drupal/KernelTests/Core/Site/SettingsRewriteTest.php

core/tests/Drupal/Tests/BrowserTestBase.php