OEL-579: Fix header.

...itelabel_helper/src/Plugin/Block/CorporateEcLogoBlock.php

...itelabel_helper/src/Plugin/Block/CorporateEuLogoBlock.php

runner.yml.dist

...navigation/block--oe-authentication-login_block.html.twig

...errides/navigation/block--system-branding-block.html.twig

...ides/navigation/block--whitelabel-ec-logo-block.html.twig

...ides/navigation/block--whitelabel-eu-logo-block.html.twig

...ates/overrides/navigation/links--language-block.html.twig

templates/patterns/header_nav/pattern-header_nav.html.twig