fix: On time change called (no before) on item drag

[DanielDerma]

#838

Link issue.

I think that is a misunderstanding with the bug, why it should have been called onTimeChange when I drag i item?

docs:

onTimeChange(visibleTimeStart, visibleTimeEnd, updateScrollCanvas, unit)

A function that's called when the user tries to scroll. Call the passed updateScrollCanvas(start, end) with the updated visibleTimeStart and visibleTimeEnd (as unix timestamps in milliseconds) to change the scroll behavior, for example to limit scrolling.

[Ilaiwi]

@florianbepunkt @MertHaddad can you help verify this PR please

[lnagel]

This PR has been marked as outdated. Here's why:

This PR modified src/lib/Timeline.js (a JavaScript class component) to include selectedItem in the isInteractingWithItem check, which controlled whether onTimeChange was triggered during item drags. The entire codebase has since been rewritten from JavaScript to TypeScript — the target file is now src/lib/Timeline.tsx. Additionally, the scroll and interaction logic has been refactored in v0.30.0-beta.5, and the isInteractingWithItem variable in the current code (!!draggingItem || !!resizingItem) is used in a different context. The specific behavioral issue from #838 would need to be re-evaluated against the current TypeScript implementation to determine if it still exists.

Thank you for the contribution! The idea/fix was appreciated even if the codebase has moved on.