Close image preview when file on disk is deleted

Fixes #81884

extensions/image-preview/src/preview.ts

@@ -88,6 +88,11 @@ export class Preview extends Disposable {
 				this.render();
 			}
 		}));
+		this._register(watcher.onDidDelete(e => {
+			if (e.toString() === this.resource.toString()) {
+				this.webviewEditor.dispose();
+			}
+		}));
 
 		this.render();
 		this.update();