AdHoc filters: Apply `isKeysOpen` state changes synchronously

[ashharrison90]

• changes keySelect to set isKeysOpen synchronously as soon as the onOpenMenu/onCloseMenu callbacks are called
• if this is set asynchronously once the options are resolved, can potentially cause issues with slow connections. example:
  • throttle connection to slooooooow
  • take a configured filter (with key + value)
  • open the key dropdown
  • click outside to close the key dropdown
  • open the value dropdown
  • click outside to close the value dropdown
  • wait for everything to resolve
  • expected: dropdowns remain closed
  • (haven't tested this, but) i think actually both dropdowns will be open, which shouldn't be possible and could cause any manner of issues

Fixes https://github.com/grafana/hyperion-planning/issues/28

📦 Published PR as canary version: 4.14.3--canary.722.8989150174.0

:sparkles: Test out this PR locally via: ```bash npm install @grafana/scenes@4.14.3--canary.722.8989150174.0 # or yarn add @grafana/scenes@4.14.3--canary.722.8989150174.0 ```

[grafanabot]

:rocket: PR was released in v4.17.1 :rocket: