Carryover instead of reject incoming signals upon continueAsNew

Is your feature request related to a problem? Please describe.
Right now we reject new incoming signals if workflow attempts to close/continueAsNew but fails due to buffered signals (or other events) to prevent an infinite loop.

This makes sense for completing/failing the workflow but not so much for continueAsNew.

Describe the solution you'd like
Upon continueAsNew, we can simply flush buffered signals to the new run instead of current run, and we don't have to fail & retry the workflow task

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

The issue names no files, tests, or entry points. Start by tracing continueAsNew handling and the path that rejects incoming signals when buffered events prevent completion; done means buffered signals are carried into the new run without failing and retrying the workflow task.