feat(core): set (default) stack termination protection on (parent) stage level

[aripalo]

Issue #31449

Closes #31449.

Reason for this change

New feature: Enable setting Stack (default) termination protection on (parent) Stage level.

Description of changes

1. Introduce optional terminationProtection into StageProps
2. In Stage constructor, either use the termination protection value from its props (if set) or inherit from parent stage
3. In Stack constructor, either use the termination protection value from its props (if set), or inherit from parent stage, or finally default to false (as before)

Description of how you validated changes

I've originally done a PoC in my own codebase (by extending cdk.Stage).

After modifications into aws-cdk codebase:

• I've added new unit tests into:
  • packages/aws-cdk-lib/core/test/stage.test.ts
  • packages/aws-cdk-lib/core/test/stack.test.ts
• I've added new integ-test into packages/@aws-cdk-testing/framework-integ/test/core/test/integ.stage-termination-protection.ts and updated the snapshots

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

Disclaimers:

• This is my first code contribution to aws-cdk, apologies if I've missed something important
• I skipped the RFC process, because this is not a breaking change… but of course if required, I can open a new discussion too.

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

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[aripalo]

Well, now I've solved my integ-test setup, and it seems that the termination protection is not correctly inherit by the stack (from stage) yet – even though unit tests succeed. Will investigate.

Turns out I was looking the assertion stack data in the snapshot, not the test stack data which was correct (i.e. had a termination protection enabled) 😄

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[aws-cdk-automation]

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