[Testing] [Feature]: Assert on events for examples

Migration from https://github.com/aws/aws-durable-execution-sdk-python-testing/issues/181

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### What would you like?

Currently we do manually asserts in integration tests.

We should be able to:

1. Generate events from local runner
2. Assert current events with the events in the json file

### Possible Implementation

_No response_

### Is this a breaking change?

No

### Does this require an RFC?

No

### Additional Context

_No response_