7 string references to breadcrumb in Drupal 9

block.block.bartik_breadcrumbs.yml in core/profiles/standard/config/install/block.block.bartik_breadcrumbs.yml

core/profiles/standard/config/install/block.block.bartik_breadcrumbs.yml

block.block.claro_breadcrumbs.yml in core/themes/claro/config/optional/block.block.claro_breadcrumbs.yml

core/themes/claro/config/optional/block.block.claro_breadcrumbs.yml

block.block.olivero_breadcrumbs.yml in core/themes/olivero/config/install/block.block.olivero_breadcrumbs.yml

core/themes/olivero/config/install/block.block.olivero_breadcrumbs.yml

block.block.seven_breadcrumbs.yml in core/profiles/standard/config/install/block.block.seven_breadcrumbs.yml

core/profiles/standard/config/install/block.block.seven_breadcrumbs.yml

block.block.seven_breadcrumbs.yml in core/profiles/demo_umami/config/install/block.block.seven_breadcrumbs.yml

core/profiles/demo_umami/config/install/block.block.seven_breadcrumbs.yml

Breadcrumb404Test::testBreadcrumbOn404Pages in core/tests/Drupal/FunctionalTests/Breadcrumb/Breadcrumb404Test.php

Tests that different 404s don't create unnecessary cache entries.

SystemBreadcrumbBlock::create in core/modules/system/src/Plugin/Block/SystemBreadcrumbBlock.php

Creates an instance of the plugin.