chore(react-nav-preview): migrates to use new slot API#28917

bsunderhus merged 1 commit intomicrosoft:mastermicrosoft/fluentui:masterfrom

bsunderhus:react-nav-preview/chore--migrates-to-use-new-slot-APIbsunderhus/fluentui:react-nav-preview/chore--migrates-to-use-new-slot-APICopy head branch name to clipboard