react-spectrum

bf8adffc - (WIP) Simplify TreeGridCollection by building the keymap inside state instead (#4730)

(WIP) Simplify TreeGridCollection by building the keymap inside state instead (#4730) * tentative update to treegridstate to minimize usage of treegrid collection reversions of delegate and layout code to come * revert changes to keyboard delegates and other areas now that we are using TableCollection again with a flattened set of rows, reverted uneeded changes where possible. Kept TableLayout changes since it felt non-tree specific and is an overall improvement * partial simplification of TreeGridCollection one snag is that useCollection expects the collection provided as the factory to have a bunch of getters that TreeGridCollection just doesnt need * get rid of TreeGridCollection in favor of function in useTreeGridState TreeGridCollection was only really being used to generate a keymap of tree grid nodes to set aria-posinset and other aria attributes so it was a bit overkill and didnt need all the extra required getters, especially since TableCollection would be used in layout/keyboard delegates.