fix(insights): Properly display no value on the Web Vitals transaction table when missing value

[jasonyuezhang]

count_scores actually returns null, so checking for 0 doesn't work.

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Copied from getsentry#100916
Original PR: getsentry#100916

[propel-test-bot]

Fix Web Vitals Transaction Table No Value Display for Missing Data

This pull request corrects the handling of missing Web Vitals data in the pagePerformanceTable.tsx component. Previously, the table would only display a no-value indicator if count_scores equaled 0, but since count_scores may return null, missing or null data was not properly rendered. The conditional checks are now updated to handle null or undefined by using a truthy check instead of equality to zero.

Key Changes

• Updated conditional checks in renderBodyCell for Web Vitals-derived columns to use !countWebVital instead of countWebVital === 0.
• Ensured that rows with missing or null Web Vitals data display the NoValue indicator as intended.

Affected Areas

• static/app/views/insights/browser/webVitals/components/tables/pagePerformanceTable.tsx
• Web Vitals transaction table rendering logic

This summary was automatically generated by @propel-code-bot