Tree Grid Multi Row Drag sample throws errors when interacting with the UI

[ChronosSF]

Steps to reproduce

1. Open https://staging.infragistics.com/angular-demos/samples/tree-grid/tree-grid-multi-row-drag
2. Use the checkboxes to select rows 3, 4 and 5 (0 based index :) )
3. Try to drag for deletion

Result

Nothing happens and an error is thrown in the console

main.dc8bf83883b14a06.js:1 ERROR TypeError: Cannot read properties of undefined (reading 'ID')
at s.deleteRowById (main.dc8bf83883b14a06.js:1:2165425)
at s.deleteRow (main.dc8bf83883b14a06.js:1:1886211)
at 728.666f107a058ce454.js:1:432987
at Array.forEach ()
at o.onDropAllowed (728.666f107a058ce454.js:1:432961)
at 728.666f107a058ce454.js:1:434431
at tD (main.dc8bf83883b14a06.js:1:383400)
at Object._ [as next] (main.dc8bf83883b14a06.js:1:383567)
at We.next (main.dc8bf83883b14a06.js:1:162825)
at at._next (main.dc8bf83883b14a06.js:1:162492)

Expected result

No error, rows to be deleted