Issue #3505853 by g4mbini, pdureau: [4.0.x-beta1] Finish remove prose and not-prose use

components/code/code.default.story.yml

components/navbar/navbar.twig

components/step/step.default.story.yml

templates/block/block--page-title-block.html.twig

templates/system/page-title.html.twig

...patterns_library/ui-patterns-component-metadata.html.twig

...ui_patterns_library/ui-patterns-component-table.html.twig

...s/ui_patterns_library/ui-patterns-overview-page.html.twig

...atterns_library/ui-patterns-overview-quicklinks.html.twig

...tes/ui_patterns_library/ui-patterns-single-page.html.twig

...es/ui_patterns_library/ui-patterns-stories-full.html.twig

...lates/ui_styles_library/ui-styles-overview-page.html.twig