CngxSidenavConfigFeature

Description#

Discriminated-union shape returned by the sidenav config features - withSidenavDimensions, withSidenavShortcut, withSidenavHoverDwell, and withSidenavRouterSync. The reducer in provideSidenavConfig / provideSidenavConfigAt matches on kind and merges payload into the corresponding config sub-tree: dimensions, hover, and routerSync are one-level nested sub-trees, shortcut is a flat top-level scalar. Mirrors CngxBreadcrumbConfigFeature from @cngx/ui/breadcrumb (nested-sub-tree style; the stepper family uses flat scalar keys instead).