feat(material/chips): prevent chips from being deleted when user holds backspace#19700

mmalerba merged 9 commits intoangular:masterangular/components:masterfrom

gioragutt:giorag/chip-list-focus-last-chip-on-backspace-v2gioragutt/components:giorag/chip-list-focus-last-chip-on-backspace-v2Copy head branch name to clipboard