21.2.x - c1295c5 fix(aria/menu): itemSelected not emitted when menu i…

…s attached to a trigger (#32880)

main - f6b7739 fix(multiple): expand type for restoreFocus (#32877)

main - e69549c fix(aria/menu): itemSelected not emitted when menu is …

…attached to a trigger (#32880)

21.2.x - 1f66af8 refactor: remove remaining NgClass usages (#32873)

main - f24fb4e refactor(multiple): strongly type SimpleChanges (#32871)

main - c7cc0be refactor: remove remaining NgClass usages (#32873)

main - b4a89d5 feat(material/button): Add support for showing a progr…

…ess indicator inside the button (#32698)

main - 936f114 fix(multiple): use eager change detection

21.2.x - cebf303 fix(material/checkbox): hide decorative elements fro…

…m assistive technology

21.2.x - 37cffba release: cut the v21.2.0 release