🔊 Add experimental features to default context hook

Author: thomas-lebeau

packages/rum-core/src/domain/contexts/defaultContext.ts

@@ -1,4 +1,11 @@
-import { canUseEventBridge, currentDrift, HookNames, round, timeStampNow } from '@datadog/browser-core'
+import {
+  canUseEventBridge,
+  currentDrift,
+  getExperimentalFeatures,
+  HookNames,
+  round,
+  timeStampNow,
+} from '@datadog/browser-core'
 import type { RumConfiguration } from '../configuration'
 import type { DefaultRumEventAttributes, DefaultTelemetryEventAttributes, Hooks } from '../hooks'
 
@@ -22,6 +29,7 @@ export function startDefaultContext(
           session_sample_rate: round(configuration.sessionSampleRate, 3),
           session_replay_sample_rate: round(configuration.sessionReplaySampleRate, 3),
           profiling_sample_rate: round(configuration.profilingSampleRate, 3),
+          experimental_features: Array.from(getExperimentalFeatures()),
         },
         browser_sdk_version: canUseEventBridge() ? __BUILD_ENV__SDK_VERSION__ : undefined,
         sdk_name: sdkName,