fix: Add the property UseAliasAsEventTarget to AWS::Serverless::StateMachine and make associated events use the state machine alias as a target.

[scorbiere]

Issue #3624

Description of changes

This change add a property UseAliasAsEventTarget to AWS::Serverless::StateMachine and make associated events use the state machine alias as a target.

Description of how you validated changes

Used the following template as input:

Transform:
  - AWS::LanguageExtensions
  - AWS::Serverless-2016-10-31
Resources:
  ExampleFunction:
    Type: AWS::Serverless::Function
    Properties:
      AutoPublishAlias: live
      Runtime: provided.al2023
      Handler: bootstrap
      CodeUri: s3://aws-sam-cli-managed-default-samclisourcebucket-example/example-fn
      Events:
        LambdaExample:
          Type: EventBridgeRule
          Properties:
            Pattern:
              source: [ aws.tag ]
  ExampleMachine:
    Type: AWS::Serverless::StateMachine
    Properties:
      AutoPublishAlias: live
      UseAliasAsEventTarget: true
      Events:
        MachineExample:
          Type: EventBridgeRule
          Properties:
            Pattern:
              source: [aws.tag]
      DefinitionUri:
        Bucket: aws-sam-cli-managed-default-samclisourcebucket-example
        Key: example-asl

With the folowing variations:

• Without the property UseAliasAsEventTarget --> same output as before this change.
• With the property UseAliasAsEventTarget set to false --> same output as before this change.
• With the property UseAliasAsEventTarget set to true --> output template is new ussing the alias as the event target and also used in the generated permission for the action states:StartExecution.

Checklist

• Adheres to the development guidelines
• Add/update transform tests
  • Using correct values
  • Using wrong values
• Add/update integration tests

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

[GavinZZ]

Can we add an integration test and test dependability?

[GavinZZ]

LGTM