backstage release v0.240.0

Added

• (agent-platform) Tools step lands compact — presets first, sticky “Selected so far” summary with the resolved count, catalogue behind its search with groups collapsed by default, compact rows paged by 20, workflows grouped by name prefix in #2309 by @teemow

Full Changelog: https://github.com/giantswarm/backstage/compare/v0.239.0...v0.240.0