fix: Fix error when saving Dashboards with null numberFormat

[pulpdrew]

Summary

This PR fixes a bug that causes an error when saving a dashboard after removing a numberFormat from a tile, due to a null value instead of the expected undefined. The possibility of a null value was introduced in #1617, to allow react-hook-form to clear the number format.

[changeset-bot]

🦋 Changeset detected

Latest commit: a5e8102

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hyperdx/common-utils	Patch

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Project	Deployment	Review	Updated (UTC)
hyperdx-v2-oss-app	Error		Jan 22, 2026 7:15pm

[claude]

✅ No critical issues found.

The fix correctly addresses the schema validation issue by allowing numberFormat to accept null values in addition to undefined. This aligns with react-hook-form's behavior when clearing form values.

Minor suggestion (optional):

• Consider adding a unit test in packages/common-utils that validates the schema accepts both null and undefined for numberFormat to prevent regression.

[github-actions]

E2E Test Results

✅ All tests passed • 0 passed • 0 skipped • 83s

Status	Count
✅ Passed	0
❌ Failed	0
⚠️ Flaky	0
⏭️ Skipped	0

Tests ran across 4 shards in parallel.

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