v2.38.0: Fix Header Bar Resize, Add Show More Demo

What's Changed

• docs: c-show-more demo by @wesleyboar in #438
• feat: js-show-more by @wesleyboar in #439, #440, #441, #442
• refactor: simplify header and logo height mgmt by @wesleyboar in #443

Full Changelog: v2.37.5...v2.38.0