fix(dify-ui): improve picker type inference

[lyzno1]

Summary

• wrap the Dify UI Select root with Base UI generic props for type-safe value inference
• tighten web Select consumers to use typed values instead of string coercion or truthy guards
• align prompt/config/select option surfaces with explicit string, number, and enum value types

Verification

• pnpm -C web type-check
• pnpm -C packages/dify-ui type-check
• pnpm -C web test app/components/share/text-generation/run-once/tests/index.spec.tsx app/components/app/configuration/debug/tests/chat-user-input.spec.tsx app/components/app/configuration/prompt-value-panel/tests/index.spec.tsx app/components/app/configuration/config-var/config-modal/tests/form-fields.spec.tsx
• pnpm -C web test app/components/workflow/nodes/iteration/tests/use-config.spec.ts app/components/datasets/documents/detail/completed/hooks/tests/use-search-filter.spec.ts app/components/datasets/documents/detail/completed/components/tests/menu-bar.spec.tsx app/components/header/account-setting/preference-page/tests/index.spec.tsx app/components/plugins/install-plugin/install-from-github/steps/tests/selectPackage.spec.tsx app/components/base/features/new-feature-panel/text-to-speech/tests/param-config-content.spec.tsx app/components/plugins/plugin-detail-panel/tool-selector/components/tests/reasoning-config-form.spec.tsx
• git diff --check

Notes

• static scan after the cleanup: Select valueStringCoerce 0, Combobox valueStringCoerce 0, truthy guard 0

[codecov]

Codecov Report

❌ Patch coverage is 89.52381% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.29%. Comparing base (1b3e8e9) to head (4a9847c).

Files with missing lines	Patch %	Lines
...omponents/share/text-generation/run-once/index.tsx	84.09%	7 Missing ⚠️
...documents/detail/completed/components/menu-bar.tsx	50.00%	2 Missing ⚠️
...figuration/config-var/config-modal/form-fields.tsx	83.33%	1 Missing ⚠️
...tool-selector/components/reasoning-config-form.tsx	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #38428      +/-   ##
==========================================
- Coverage   85.35%   85.29%   -0.06%     
==========================================
  Files        5159     5004     -155     
  Lines      269252   264935    -4317     
  Branches    51418    50365    -1053     
==========================================
- Hits       229810   225987    -3823     
+ Misses      35005    34511     -494     
  Partials     4437     4437              

Flag	Coverage Δ
cli	?
dify-ui	94.77% <100.00%> (+0.01%)	⬆️
web	84.84% <88.88%> (-0.01%)	⬇️

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