Add hotswap to canaries

[sobolk]

Problem

Our canary checks don't include any hotswap scenarios.

This would have caught this regression right after CDK release - aws/aws-cdk#32219 .

Function code hotswap is our P0 scenario, so we should catch regressions there fast.

Changes

1. Add test project with function hotswap
2. Include it in canary checks

Validation

Canary run https://github.com/aws-amplify/amplify-backend/actions/runs/12145216809

Checklist

• If this PR includes a functional change to the runtime behavior of the code, I have added or updated automated test coverage for this change.
• If this PR requires a change to the Project Architecture README, I have included that update in this PR.
• If this PR requires a docs update, I have linked to that docs PR above.
• If this PR modifies E2E tests, makes changes to resource provisioning, or makes SDK calls, I have run the PR checks with the run-e2e label set.

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

[changeset-bot]

🦋 Changeset detected

Latest commit: b6fb2e8

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[sobolk]

Had an offline chat with @Amplifiyer .

I'll refactor this PR to :

1. decouple new scenario from e2e tests.
2. focus scenario on "hotswap function code" use case.

[Amplifiyer]

nit: just to be more explicit

Suggested change

	export const waitForSandboxToHotswapResources = () =>
	new PredicatedActionBuilder().waitForLineIncludes('hotswapping resources:');
	export const waitForSandboxToBeginHotswappingResources = () =>
	new PredicatedActionBuilder().waitForLineIncludes('hotswapping resources:');