ResultSet | chartPivot & tablePivot | Missing data is always forced to 0

[mike-paretos]

Describe the bug
Missing measure data is force to be zero due to bug:

const measureValue = (row, measure) => row[measure] || pivotConfig.fillWithValue || 0;

something like this would work better:

const measureValue = (row, measure) => row[measure] ?? pivotConfig.fillWithValue ?? 0;

https://github.com/cube-js/cube/blob/master/packages/cubejs-client-core/src/ResultSet.ts#L537

To Reproduce
Steps to reproduce the behavior:

1. Create Result Set with some null measures
2. Perform chartPivot with fillWithValue: null
3. Missing values filled with 0

Expected behavior
Missing values filled with null

Screenshots

Version:
1.3.67

[igorlukanin]

Thanks for reporting @mike-paretos!

Would you be open to submit a PR? Ideally, with a test. Thanks in advance!