[Feature Request] Improve WaitConditionAsync semantics

[cretz]

Describe the solution you'd like

Today we wake up all wait conditions that are satisfied at the same time. This doesn't allow you to guarantee the condition is true on the line after the wait condition. We should only wake up a single wait condition when satisfied and then run the entire loop again. This will allow you to implement things like:

await Workflow.WaitConditionAsync(() => !locked);
locked = true;

I believe this issue is similar to temporalio/sdk-python#618 in Python. And would require an SDK flag.

[Sushisource]

When doing this, it would make sense to resurrect the PR for #375 and include it with this change.