[DREAM-783] Timeline widget should be hidden when no phase is active in the project#24452

HDinger merged 2 commits into

release/17.7opf/openproject:release/17.7from

bug/dream-783-timeline-widget-should-be-hidden-when-no-phase-is-active-in-the-projectopf/openproject:bug/dream-783-timeline-widget-should-be-hidden-when-no-phase-is-active-in-the-projectCopy head branch name to clipboard