Resolves#38621, #38627, and #38623.
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] Added/updated automated tests
- [X] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## Release Notes
* **New Features**
* Added a new premium-tier Technician role with read/write permissions
across teams, hosts, policies, queries, and configurations.
* License validation now prevents assigning premium roles on Fleet Free
editions.
* **Bug Fixes**
* Updated role-based access controls across team management pages to
properly restrict technician access.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Lucas Manuel Rodriguez
59786c8c0e