## #21468
- Memoize `app` and `table` context for improved stability
- Update policies page dependencies to reference now stable context
values
- Widespread updates to logic to enable No teams on the Manage polices
page, PolicyPage, and related pages and flows
_Outstanding bugs to address:_
- [x] When navigating from another page with "No team" to Policies, team
is reset to "All teams"
- [x] same after saving or editing a no-team policy_
- [x] Changes file added for user-visible changes in `changes/`
- [x] Manual QA for all new/changed functionality
---------
Co-authored-by: Lucas Rodriguez <lucas@fleetdm.com>
Co-authored-by: Jacob Shandling <jacob@fleetdm.com>
- Uses Context API to track state
- resetSelectedRows default to false and only momentarily becomes true upon successful notification
Several other ideas were explored and ruled out including: asyncDebounce (impossible approach), applying state throughout the app (not concise nor maintainable), modifications directly to DataTable only (react-table did not have the right key combinations to reset selected rows manually when we needed).
Closes#1540
Co-authored by: @martavis
