fix(plugin-chart-pivot-table): cross filtering by adhoc column

[kgabryje]

Cross filtering in PivotTable v2 didn't work properly when applied to an adhoc column (new feature). This PR fixes the issue.

[vercel]

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[codecov]

Codecov Report

Merging #1465 (51f170d) into master (9e46f98) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1465      +/-   ##
==========================================
- Coverage   30.94%   30.92%   -0.03%     
==========================================
  Files         502      502              
  Lines       10212    10219       +7     
  Branches     1760     1762       +2     
==========================================
  Hits         3160     3160              
- Misses       6800     6807       +7     
  Partials      252      252              

Impacted Files	Coverage Δ
...s/plugin-chart-pivot-table/src/PivotTableChart.tsx	0.00% <0.00%> (ø)

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[villebro]

LGTM