Describe the bug

I have a CodePipline pipeline built by CDK pipelines.

After upgrading to aws-cdk-lib 2.188.0,
cdk diff tells me the action name FileAssets in the stage Assets is about to be changed to a strange name.

This seems occur when pipline's publishAssetsInParallel is false.

[~] AWS::CodePipeline::Pipeline CodePipeline CodePipelineB74E5936
 └─ [~] Stages
     └─ @@ -119,7 +119,7 @@
        [ ]     "Name": "Synth_Output"
        [ ]   }
        [ ] ],
        [-] "Name": "FileAsset",
        [+] "Name": "MyApp_MyAppStage_Next_Custom_S3AutoDeleteObjectsCustomResourceProvider_Code",
        [ ] "RoleArn": {
        [ ]   "Fn::GetAtt": [
        [ ]     "PipelineCodeBuildActionRole226DB0CB",
[~] AWS::CodeBuild::Project Pipeline/Assets/FileAsset PipelineAssetsFileAsset5D8C5DA6 may be replaced
 └─ [~] Description (may cause replacement)
     ├─ [-] Pipeline step MyApp/CodePipeline/Assets/FileAsset
     └─ [+] Pipeline step MyApp/CodePipeline/Assets/MyApp_MyAppStage_Next_Custom_S3AutoDeleteObjectsCustomResourceProvider_Code

Regression Issue

• Select this option if this issue appears to be a regression.

Last Known Working CDK Version

2.186.0

Expected Behavior

No template changes.

Current Behavior

The name of action FileAssets has been changed.

Reproduction Steps

The snnipet of my pipeline follows:

const pipeline = new pipelines.CodePipeline(this, 'Pipeline', {
  synth: new pipelines.ShellStep('Synth', {
    input: pipelines.CodePipelineSource.connection('repo/name', 'main', { connectionArn }),
    commands: ['cdk synth'],
  }),
  publishAssetsInParallel: false, // HERE
});
pipeline.addStage(
  new MyAppStage(this, 'MyAppStage'); // stage includes one or more assets
);

Possible Solution

Submitted #34049.

Additional Information/Context

No response

CDK CLI Version

2.1007.0 (build d3f6c3c)

Framework Version

No response

Node.js Version

22.14.0

OS

Ubuntu

Language

TypeScript

Language Version

No response

Other information

No response