8.1.0

This release mainly fixes a couple of bugs from the initial 8.0.0 release. In addition to the changes below, we
updated some initially missed points in our migration guides and documentation.

• feat(aws-serverless): Fix tree-shaking for aws-serverless package (#12017)
• feat(node): Bump opentelemetry instrumentation to latest version (#12028)
• feat(scope): Bring back lastEventId on isolation scope (#11951) (#12022)
• fix(aws-serverless): Export awslambda-auto
• fix(node): Do not warn for missing instrumentation if SDK is disabled (#12041)
• fix(react): Set dependency-injected functions as early as possible (#12019)
• fix(react): Warn and fall back gracefully if dependency injected functions are not available (#12026)
• ref(core): Streamline parseSampleRate utility function (#12024)
• ref(feedback): Make eventId optional and use lastEventId in report dialog (#12029)