Changes:
- ChecklistItemRow.kt: Import mutableIntStateOf
- ChecklistItemRow.kt: Add onHeightChanged callback parameter
- ChecklistItemRow.kt: Track lastLineCount state for line wrap detection
- ChecklistItemRow.kt: Detect line count increase in onTextLayout and trigger callback
- NoteEditorScreen.kt: Add scrollToItemIndex state in ChecklistEditor
- NoteEditorScreen.kt: Add LaunchedEffect for auto-scroll on height change
- NoteEditorScreen.kt: Pass onHeightChanged callback to ChecklistItemRow
When typing in a checklist item at the bottom of the list, the editor now
automatically scrolls to keep the cursor visible when text wraps to a new line.
3e4b1bd07e