LocalLazyItemScope

Carries the innermost LazyColumn/LazyRow item's Compose LazyItemScope down the tree, or null when the current tile isn't a direct item of a lazy list — read by Modifier.size(), checked before LocalColumnScope/LocalRowScope/LocalFlowRowScope, so a Weight-sized child of a LazyColumn/LazyRow gets fillParentMaxWidth/Height treatment (the closest lazy-list equivalent) instead of a ColumnScope/RowScope weight, consistent with lazy lists never publishing those scopes to their children. Provided by LazyColumnTileRenderer/ LazyRowTileRenderer; reset to null by every non-lazy container renderer (Column/Row/Card/FlowRow).