#7230 fix(executor): preserve actors for actorless tool calls

Summary

• build credential-group executor principals in process so actorless workflows can list credentials
• preserve the legacy execution actor for personal resource lookup and attribution while keeping authorization principal-based
• apply actorless compatibility across custom tools, credential access, Knowledge, file sharing, Windchill transfers, and workflow reverts

Type of Change

• Bug fix

Testing

• bun run lint
• bun run check:audits
• bun run type-check in apps/sim
• 173 focused tests

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)