refactor(web): simplify the tool category filter component

[lyzno1]

Summary

• replace the legacy React.FC declaration with a named function
• import ReactNode directly for the option icon type
• keep the tool category filter's public behavior and rendered DOM unchanged

Scope

Only web/app/components/base/tab-slider-new/index.tsx.

This is a mechanical preparation layer. It does not change props, classes, handlers, test ids, or output.

Verification

• pnpm exec vp test run app/components/base/tab-slider-new/__tests__/index.spec.tsx — 1/1
• pnpm check — 0 errors, existing warnings only
• git diff --check

Visual regression

None: the generated JSX and class names are unchanged.

Stack

Base: main

Child: #40243 adds the semantic filter behavior. Review and revert this PR independently; if reverting the complete stack, start from the top child.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.42%. Comparing base (e036075) to head (102f045).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #40242   +/-   ##
=======================================
  Coverage   86.41%   86.42%           
=======================================
  Files        5107     5107           
  Lines      290731   290749   +18     
  Branches    57917    57923    +6     
=======================================
+ Hits       251245   251267   +22     
+ Misses      34545    34541    -4     
  Partials     4941     4941           

Flag	Coverage Δ
dify-ui	93.49% <ø> (ø)
web	86.11% <100.00%> (+<0.01%)	⬆️

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