feat(pipelines): add V2 pipeline type support in L3 construct (#34005)

### Issue # 33995
#33995
Closes #33995 

### Reason for this change

Support v2 pipeline type in cdk.pipelines 

### Description of changes

add pipeline v2 type support

### Describe any new or updated permissions being added

new


### Description of how you validated changes

integ test/unit test/local deployment

### Checklist
- [Y] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

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

Author: hwum

packages/@aws-cdk-testing/framework-integ/test/pipelines/test/integ.newpipeline-reduce-stagerole-scope.ts

@@ -72,6 +72,7 @@ class PipelineStack extends Stack {
 const app = new App({
   postCliContext: {
     '@aws-cdk/pipelines:reduceStageRoleTrustScope': true,
+    '@aws-cdk/aws-codepipeline:defaultPipelineTypeToV2': false,
   },
 });
 const stack = new PipelineStack(app, 'CdkPipelineInvestigationStack');