Revert "Feat/use durable functions emulator image (#8708)"

[reedham-aws]

This reverts commit 4e47788.

Which issue(s) does this change fix?

Since merging #8708, we've seen a consistent failure in the durable functions integration tests related to the sam local execution stop command not properly returning an error code when attempting to stop an already stopped execution.

Why is this change necessary?

The root cause of the failures remains unclear, and thus reverting is the easiest path forward.

How does it address the issue?

Reverts the code that introduced the changes.

What side effects does this change have?

The durable functions emulator will remain bundled with the SAM CLI installation, rather than pulled directly from ECR. Once this issue is fixed, we will return to using the emulator from ECR.

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Review the generative AI contribution guidelines
• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[reedham-aws]

Integration test run just because this revert is to verify the integ tests work: https://github.com/aws/aws-sam-cli/actions/runs/24109630940

[bchampp]

I think this is because of aws/aws-durable-execution-sdk-python-testing#195, the integration test that's failing is expecting the wrong behaviour.

[reedham-aws]

Superseded by the actual integration test fix: #8906.