fix(settings): restore rc.1 CSS module hashes for model settings and onboarding

[yaojin3616]

Summary

• Upstream @deepseek-ai/dsh-client-ui-settings-models@0.1.2-rc.1 compiled CSS module class prefixes to qy-_KG_ (and lbsctW_ for onboarding).
• In the initial 0.1.2-rc.1 patch port, the patch was copied from 0.1.2-alpha.4 which had replaced module CSS object mappings with A_4Mua_ and _2CJT8a_. Because the injected <style> sheet contained qy-_KG_ selectors while components rendered class="A_4Mua_...", zero CSS rules matched and the entire Model Settings page lost its styling.
• Restored original rc.1 CSS module hashes (qy-_KG_ and lbsctW_) and updated injected selector rules.
• Updated test/model-settings-catalog-ux-patch.test.ts assertion to test for qy-_KG_customizedBody.

Verification

• npx patch-package clean
• npm run typecheck PASS
• npx vitest run test/model-settings-catalog-ux-patch.test.ts test/model-reasoning-efforts-patch.test.ts test/model-picker-patch.test.ts test/onboarding-patch.test.ts PASS (34/34 tests)
• npm run build PASS