fix import errors for playwright test

src/queries/sql/heatmap/ensureHeatmapSnapshot.ts

@@ -578,14 +578,13 @@ function getSnapshotErrorMessage(error: unknown) {
 }
 
 async function createSnapshotBrowser() {
+  const { chromium } = await import('playwright-core');
   const endpoint = process.env.PLAYWRIGHT_URL?.trim();
 
   if (endpoint) {
-    const { chromium } = await import('playwright-core');
     return chromium.connect(endpoint);
   }
 
-  const { chromium } = await import('@playwright/test');
   return chromium.launch({
     channel: 'chromium',
     headless: true,