Issue #3455820 by nicxvan, alexpott, smustgrave: Decompress files for config_install

core/.cspell.json

core/.phpstan-baseline.php

...ionalTests/Installer/InstallerConfigDirectoryTestBase.php

...sts/Installer/InstallerExistingConfigMultilingualTest.php

...alTests/Installer/InstallerExistingConfigNoConfigTest.php

...sts/Installer/InstallerExistingConfigNoSystemSiteTest.php

...s/Installer/InstallerExistingConfigProfileHookInstall.php

.../InstallerExistingConfigSyncDirectoryMultilingualTest.php

...nstallerExistingConfigSyncDirectoryProfileHookInstall.php

...stallerExistingConfigSyncDirectoryProfileMismatchTest.php

...FunctionalTests/Installer/InstallerExistingConfigTest.php

...tionalTests/Installer/InstallerExistingConfigTestBase.php

core/tests/fixtures/config_install/multilingual.tar.gz

...s/config_install/multilingual/block.block.stark_admin.yml

...onfig_install/multilingual/block.block.stark_branding.yml

..._install/multilingual/block.block.stark_local_actions.yml

...ig_install/multilingual/block.block.stark_local_tasks.yml

...s/config_install/multilingual/block.block.stark_login.yml

...onfig_install/multilingual/block.block.stark_messages.yml

...fig_install/multilingual/block.block.stark_page_title.yml