fix: Remove objc from session replay recording methods

[github-actions]

Note

The pull request "fix: Remove objc from session replay recording methods" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

Fixes #6198 by removing the objc selectors in favor of pure Swift

[linear]

COCOA-680 fix: Remove objc from session replay recording methods