fix: resuming for tests

Author: Varixo

Diff for: packages/qwik/src/testing/rendering.unit-util.tsx

@@ -137,6 +137,7 @@ export async function ssrRenderToDom(
   const containerElement = document.querySelector(QContainerSelector) as _ContainerElement;
   emulateExecutionOfQwikFuncs(document);
   const container = _getDomContainer(containerElement) as _DomContainer;
+  await getTestPlatform().flush();
   const getStyles = getStylesFactory(document);
   if (opts.debug) {
     console.log('========================================================');