Merge new-kb-treelist-expand-nodes-programmatically-3b51d766b02b43d8bc158bb166d0329e-2452 into production#2474

dimodi merged 2 commits intoproductiontelerik/blazor-docs:productionfrom

new-kb-treelist-expand-nodes-programmatically-3b51d766b02b43d8bc158bb166d0329e-2452telerik/blazor-docs:new-kb-treelist-expand-nodes-programmatically-3b51d766b02b43d8bc158bb166d0329e-2452Copy head branch name to clipboard