Masonry: Multicolumn integration test remove unused typescript suppression errors

[JosAnGoCa]

Summary

This PR focuses on optimizing our integration test setup by removing redundant TypeScript error suppression comments in Playwright tests. Additionally, it introduces logic to verify and create a directory for storing scroll performance metrics.

What changed?

• Eliminated all superfluous TypeScript error suppression comments in the integration test utilities.
• Added code to ensure the directory structure exists for saving scroll performance test results:

const scrollPerformanceResultsFilePath = 'playwright/test-results/scroll-performance-results.json';
const dir = dirname(scrollPerformanceResultsFilePath);

if (!existsSync(dir)) {
  mkdirSync(dir, { recursive: true });
}

Why?

These changes were necessary to eliminate unnecessary error suppression, improve code clarity, and resolve an issue related to local test execution.

Checklist

• Fix test
• Remove unnecessary error suppressions

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