fix(core): apps that use token-aware-stringify are construct-instantiation-order-dependent

[comcalvi]

Issue # (if applicable)

Closes #31345.

Reason for this change

Any stringified value containing an intrinsic will use a custom resource to resolve this value at deploy time.

Today, this custom resource's logical ID will take the form 'CDKJsonStringify<number>', where is a counter incremented for each stringified value. This results in resource replacement updates for the custom resource when the order of construct instantiation is changed, like changing this:

const app = new App();
new SomeStack(app, 'Stack1');
new SomeStack(app, 'Stack2');

to:

const app = new App();
new SomeStack(app, 'Stack2');
new SomeStack(app, 'Stack1');

This only happens if SomeStack stringifies a token, which some CDK constructs will do automatically. These resource replacements won't affect customer infrastructure, but customers using a common setup as in #31345 will see diffs on the same application in different environments, which violates the repeatability promise of CDK.

Description of changes

Generate a unique identifier from the token's value instead of a counter. This makes this logical ID no longer instantiation-order dependent.

This will cause diffs when upgrading.

Description of how you validated changes

Unit, integration, and manual tests.

Checklist

• [x] My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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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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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 92c9551b2e4323ba129cfdf497de5aab69371d70
• Result: SUCCEEDED
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