GTK4: Replace deprecated container, layout and display APIs - #1092

GTK4: Replace deprecated container, layout and display APIs#1092

Dev10-sys wants to merge 3 commits into

sugarlabs:gtk4-portsugarlabs/sugar:gtk4-portfrom

Dev10-sys:gtk4-vbox-hbox-migrationDev10-sys/sugar:gtk4-vbox-hbox-migrationCopy head branch name to clipboard