[frontend] feat(iconbar): fix selected domains (#103)

[GaetanSantucci]

Description
On the new Threat Arsenal page, when I select two domain filters, I can no longer deselect them by clicking on them. It only works with one domain.

Expected Output
The domain filter should deselect when I click on it if it is active, even if several domains are selected

Testing Instructions

1. Test iconbar behavior to display multiple domains

Related issues

• Closes #103

[Copilot]

Pull request overview

Fixes the domain icon-bar filter toggle behavior so a selected domain can be deselected even when multiple domains are active (reported on the Threat Arsenal page). The change aligns the click handler with the queryable filter state by updating filter values in-place instead of using a helper that only appends values.

Changes:

• Compute next selected domains from the current SearchPaginationInput filter values rather than local state.
• Use handleUpdateValuesById to replace the filter’s values (supports removing values), and fall back to creating the filter when missing.
• Minor adjustment to how selectedDomains is synced from the active filter.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.39%. Comparing base (d00e1e4) to head (e5359e0).

Files with missing lines	Patch %	Lines
...n/components/common/domains/useDomainIconFilter.ts	0.00%	9 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##             release/current    #5677      +/-   ##
=====================================================
- Coverage              40.40%   40.39%   -0.01%     
+ Complexity              6113     6112       -1     
=====================================================
  Files                   2123     2123              
  Lines                  56989    56991       +2     
  Branches                7229     7230       +1     
=====================================================
- Hits                   23025    23023       -2     
- Misses                 32610    32613       +3     
- Partials                1354     1355       +1     

Flag	Coverage Δ
backend	64.33% <ø> (-0.01%)	⬇️
frontend	1.42% <0.00%> (-0.01%)	⬇️

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