[RELEASE] React Native SDK v2.8.1

[marco-saia-datadog]

What does this PR do?

Prepares v2.8.1 release with various important fixes.

What's Changed

• RUM-9842 Refactored Session ID Event Listener and fixed initFromNative by @marco-saia-datadog in [RUM-9842] Refactored Session ID Event Listener and fixed initFromNative #874
• [FIX] Android: runtime error 'Unable to find JSI module for call' by @marco-saia-datadog in [FIX] Android: runtime error 'Unable to find JSI module for call' #889
• RUM-10113 Fix static linkage configuration problem by @cdn34dd in [RUM-10113] Fix static linkage configuration problem #886
• RUM-9624 Gitlab: iOS New Architecture unit tests by @marco-saia-datadog in [RUM-9624] Gitlab: iOS New Architecture unit tests #885
• Bump Android SDK to 2.21.0 by @sbarrio in Bump Android SDK to 2.21.0 #871
• [FIX] Fixed site and useAccessibilityLabel not being picked up from FileBasedConfiguration by @marco-saia-datadog in [FIX] Fixed 'site' and 'useAccessibilityLabel' not being picked up from FileBasedConfiguration #891
• [FIX] Codepush: useAccessibilityLabel and actionNameAttribute properties not being picked up from configuration by @marco-saia-datadog in [FIX] Codepush: unset 'useAccessibilityLabel' and 'actionNameAttribute' properties #890

Full Changelog: 2.8.0...2.8.1

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)
• If this PR is auto-generated, please make sure also to manually update the code related to the change

[datadog-datadog-prod-us1]

Datadog Report

Branch report: marcosaia/release-v2.8.1
Commit report: 3d44dfe
Test service: dd-sdk-reactnative

✅ 0 Failed, 663 Passed, 1 Skipped, 3.63s Total Time