feat: update Mesh V2 description and position for legacy compatibility#496

takaokouji merged 5 commits intodevelopsmalruby/smalruby3-gui:developfrom

feature/issue-493-mesh-v2-legacy-compatibilitysmalruby/smalruby3-gui:feature/issue-493-mesh-v2-legacy-compatibilityCopy head branch name to clipboard