This is done with the intention to add new {Get,Subscribe}ActorEvents in a
future release (i.e. soon!) with both decoded values (dag-json represented)
and simplified (no flags or codec). But because this comes with some
trade-offs wrt fidelity of information (e.g. likely needing to drop events with
badly encoded values, and not retaining original codec), we need to also have
a Raw form of these APIs for consumers that want to take on the burden of
consuming them as they are.
Use the functionalities already provided by `testify` to assert eventual
conditions, and remove the use of `time.Sleep`.
Remove duplicate code in utility functions that are already defined.
Refactor assertion helper functions to use consistent terminology:
"require" implies fatal error, whereas "assert" implies error where the
test may proceed executing.
Refactor `map` usage for actor event table tests to ensure deterministic
test execution order, making debugging potential issues easier. If
non-determinism is a target, leverage Go's built-in parallel testing
capabilities.
