ref: Use scope observer protocol in dependency container

[github-actions]

Note

The pull request "ref: Use scope observer protocol in dependency container" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

I realized the dependency container header declared this function to return SentryWatchdogTerminationScopeObserver but really all that it needed was to be a type conforming to SentryScopeObserver . So updated it to this protocol, it will make the Swift conversion easier

#skip-changelog

[linear]

COCOA-797