ترقية @atlaskit/feature-gate-js-client من 7.x إلى 8.x

### Major Changes

- [`67eb7db820b2b`](https://bitbucket.org/atlassian/atlassian-frontend-monorepo/commits/67eb7db820b2b) -
  With `includeFfpFlags: true`, `checkGate`, `getExperiment` and `getExperimentValue` serve flags
  from the Feature Flag Platform (FFP) as well as Statsig, so flags migrated to FFP keep working
  without code changes. Without the option, only Statsig is used, as before. If you initialize with
  `initializeFromValues`, also pass the FFP values to serve FFP flags.
- [`67eb7db820b2b`](https://bitbucket.org/atlassian/atlassian-frontend-monorepo/commits/67eb7db820b2b) -
  Add `FeatureGates.ffpClient` to read flags that exist only in the Feature Flag Platform (FFP),
  available once the client is initialized. Keep reading existing Statsig flags, including ones
  being migrated to FFP, with `checkGate`, `getExperiment` and `getExperimentValue`. Its type,
  `FfpEvaluationClient`, is exported from `@atlaskit/feature-gate-js-client/ffp/types`.

### Minor Changes

- [`67eb7db820b2b`](https://bitbucket.org/atlassian/atlassian-frontend-monorepo/commits/67eb7db820b2b) -
  Add `./eval-flags/*` entry points that expose the `/api/v1/evalFlags` response helpers.
  `@atlaskit/feature-gate-fetcher` now uses them instead of its own copy, so products that bundle
  both packages ship one implementation.

### Patch Changes

- Updated dependencies

بين @atlaskit/feature-gate-js-client 7.1.0 و8.0.0 وجد Vigia عدد 0 من الصادرات المحذوفة، و0 من التوقيعات المعدّلة، و0 من أعضاء الأصناف أو الواجهات المحذوفة أو المعدّلة.

عُلِّم 0 من الصادرات أو الأعضاء حديثًا على أنها موقوفة في @atlaskit/feature-gate-js-client 8.0.0.