fix: avoid republishing existing npm versions

[vardhineediganesh877-ui]

Summary

• Check whether the exact local package version already exists on npm before publishing
• Patch-bump repeatedly in CI until the publish job finds an unpublished version
• Keep the existing publish flow otherwise unchanged

Verification

• npm view exact local version confirms 4.0.0 exists
• npm run validate:types
• npm run test
• git diff --check