Fix filter set capture failing on timestamp column advanced filters, DH-12754

[vbabich]

We were dehydrating the filters from the irisGridState that were already dehydrated. This worked fine in most cases, but failed on timestamp column advanced filters.

[codecov]

Codecov Report

Merging #649 (b8e6706) into main (1a8bb7c) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #649   +/-   ##
=======================================
  Coverage   35.72%   35.72%           
=======================================
  Files         396      396           
  Lines       29228    29226    -2     
  Branches     6978     6978           
=======================================
  Hits        10442    10442           
+ Misses      18599    18597    -2     
  Partials      187      187           

Flag	Coverage Δ
unit	35.72% <ø> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
...-core-plugins/src/panels/FilterSetManagerPanel.jsx	64.34% <ø> (+0.98%)	⬆️
...s/code-studio/src/storage/LocalWorkspaceStorage.ts	13.33% <0.00%> (ø)

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