Fix #43370 - don't create settings search filters for extensions without UUIDs

src/vs/workbench/parts/preferences/electron-browser/preferencesSearch.ts

@@ -45,7 +45,8 @@ export class PreferencesSearchService extends Disposable implements IPreferences
 			// Filter to enabled extensions that have settings
 			return exts
 				.filter(ext => this.extensionEnablementService.isEnabled(ext.identifier))
-				.filter(ext => ext.manifest.contributes && ext.manifest.contributes.configuration);
+				.filter(ext => ext.manifest.contributes && ext.manifest.contributes.configuration)
+				.filter(ext => !!ext.identifier.uuid);
 		});
 	}