Add expand / collapse support to TreeView#7411

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MiriShulman wants to merge 4 commits intoisl-org:mainfrom

MiriShulman:feature/treeview-expand-collapse

Commits on Jan 22, 2026

after adding the fitcher before checking if it's work
MiriShulman
committed
GUI: add expand / collapse helpers to TreeView
MiriShulman
committed

Commits on Jan 26, 2026

the Expand and Collapse functions running
MiriShulman
committed

Commits on Feb 4, 2026

Fix TreeView expand-collapse.
MiriShulman
committed