test: import components without Lumo styles from src (#9614)

Author: vursen

packages/board/test/visual/lumo/board.test.js

@@ -1,6 +1,6 @@
 import { fixtureSync } from '@vaadin/testing-helpers/dist/fixture.js';
 import { visualDiff } from '@web/test-runner-visual-regression';
-import '../../../theme/lumo/vaadin-board.js';
+import '../../../vaadin-board.js';
 
 describe('board', () => {
   let element;

packages/cookie-consent/test/visual/lumo/cookie-consent.test.js

@@ -1,6 +1,6 @@
 import { fixtureSync } from '@vaadin/testing-helpers/dist/fixture.js';
 import { visualDiff } from '@web/test-runner-visual-regression';
-import '../../../theme/lumo/vaadin-cookie-consent.js';
+import '../../../vaadin-cookie-consent.js';
 
 describe('cookie-consent', () => {
   let element;