Revert "better fix for https://github.com/microsoft/vscode/issues/119943"

This reverts commit 0877dc21.

src/vs/workbench/api/browser/mainThreadDocuments.ts

@@ -156,12 +156,14 @@ export class MainThreadDocuments extends Disposable implements MainThreadDocumen
 			}
 		}));
 
-		this._register(fileService.onDidRunOperation(e => {
-			const isMove = e.isOperation(FileOperation.MOVE);
-			if (isMove || e.isOperation(FileOperation.DELETE)) {
-				const removed = isMove ? e.target?.resource : e.resource;
-				if (removed) {
-					this._modelReferenceCollection.remove(removed);
+		this._register(workingCopyFileService.onDidRunWorkingCopyFileOperation(e => {
+			const isMove = e.operation === FileOperation.MOVE;
+			if (isMove || e.operation === FileOperation.DELETE) {
+				for (const pair of e.files) {
+					const removed = isMove ? pair.source : pair.target;
+					if (removed) {
+						this._modelReferenceCollection.remove(removed);
+					}
 				}
 			}
 		}));