Clicking on the empty area of a note column won't set focus #21
Description
Regression due to the column model refactoring:
2025-07-23T17:26:32.105 [I] EditorService: Focus for track 1 on column 0 on line 18446744073709551613 requested
2025-07-23T17:26:35.755 [I] Ui: NoteColumnLineContainer: Column 0 left clicked on line 77
2025-07-23T17:26:35.755 [I] EditorService: Focus for track 2 on column 0 on line 69 requested
2025-07-23T17:26:36.412 [I] Ui: NoteColumnLineContainer: Column 0 left clicked on line 76