fix(filters): tree data presets caused regression in any grid w/presets

[ghiscoding]

• a regression was observer when using GridState/GridPresets with Local Storage, whenever clearing a Filter, it would put back the preset filter.

[codecov]

Codecov Report

Merging #597 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #597   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          149       149           
  Lines         9945      9946    +1     
  Branches      3369      3370    +1     
=========================================
+ Hits          9945      9946    +1     

Impacted Files	Coverage Δ
...lickgrid/components/angular-slickgrid.component.ts	100.00% <100.00%> (ø)

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