Fixes lint issue

src/trackers/lineTracker.ts

@@ -110,6 +110,7 @@ export class LineTracker implements Disposable {
 			this._disposable = Disposable.from(
 				window.onDidChangeActiveTextEditor(Functions.debounce(this.onActiveTextEditorChanged, 0), this),
 				window.onDidChangeTextEditorSelection(this.onTextEditorSelectionChanged, this),
+				// eslint-disable-next-line @typescript-eslint/no-empty-function
 				this.onStart?.() ?? { dispose: () => {} }
 			);