fix(stepfunctions): disabling logging still requires LogGroup (#30816)

### Issue # (if applicable)

Closes #30814.

### Reason for this change

To disable logging on a StateMachine (with logging enabled), we should specify `LogLevel.OFF` to `LogOptions.level`. But cannot remove the LogGroup because `LogOptions.destination` is required.

``` ts
new sfn.StateMachine(this, 'StateMachine', {
  definitionBody: ...,
  logs: { level: sfn.LogLevel.OFF } // allow to disable logging
});
```

### Description of changes

- Make `LogOptions.destination` optional.
- Validate `LogOptions.destination` is present when `LogOptions.level` is not `OFF`.

### Description of how you validated changes

Unit and integ tests that verify `LogOptions.destination` is opitional when `LogOptions.level` is `OFF` and throw an exception otherwise.

### Checklist
- [x] 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: Tietew

packages/@aws-cdk-testing/framework-integ/test/aws-stepfunctions/test/integ.state-machine-logging.js.snapshot/IntegTestDefaultTestDeployAssertE3E7D2A4.assets.json

@@ -0,0 +1,163 @@
+{
+ "Resources": {
+  "LogGroupF5B46931": {
+   "Type": "AWS::Logs::LogGroup",
+   "Properties": {
+    "RetentionInDays": 731
+   },
+   "UpdateReplacePolicy": "Delete",
+   "DeletionPolicy": "Delete"
+  },
+  "StateMachineWithLoggingALLRole0984788E": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "states.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "StateMachineWithLoggingALLRoleDefaultPolicy12972CD9": {
+   "Type": "AWS::IAM::Policy",
+   "Properties": {
+    "PolicyDocument": {
+     "Statement": [
+      {
+       "Action": [
+        "logs:CreateLogDelivery",
+        "logs:DeleteLogDelivery",
+        "logs:DescribeLogGroups",
+        "logs:DescribeResourcePolicies",
+        "logs:GetLogDelivery",
+        "logs:ListLogDeliveries",
+        "logs:PutResourcePolicy",
+        "logs:UpdateLogDelivery"
+       ],
+       "Effect": "Allow",
+       "Resource": "*"
+      }
+     ],
+     "Version": "2012-10-17"
+    },
+    "PolicyName": "StateMachineWithLoggingALLRoleDefaultPolicy12972CD9",
+    "Roles": [
+     {
+      "Ref": "StateMachineWithLoggingALLRole0984788E"
+     }
+    ]
+   }
+  },
+  "StateMachineWithLoggingALL687B0F0F": {
+   "Type": "AWS::StepFunctions::StateMachine",
+   "Properties": {
+    "DefinitionString": "{\"StartAt\":\"Pass\",\"States\":{\"Pass\":{\"Type\":\"Pass\",\"End\":true}}}",
+    "LoggingConfiguration": {
+     "Destinations": [
+      {
+       "CloudWatchLogsLogGroup": {
+        "LogGroupArn": {
+         "Fn::GetAtt": [
+          "LogGroupF5B46931",
+          "Arn"
+         ]
+        }
+       }
+      }
+     ],
+     "Level": "ALL"
+    },
+    "RoleArn": {
+     "Fn::GetAtt": [
+      "StateMachineWithLoggingALLRole0984788E",
+      "Arn"
+     ]
+    }
+   },
+   "DependsOn": [
+    "StateMachineWithLoggingALLRoleDefaultPolicy12972CD9",
+    "StateMachineWithLoggingALLRole0984788E"
+   ],
+   "UpdateReplacePolicy": "Delete",
+   "DeletionPolicy": "Delete"
+  },
+  "StateMachineWithLoggingOFFRole726E8117": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "states.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "StateMachineWithLoggingOFFF82B7349": {
+   "Type": "AWS::StepFunctions::StateMachine",
+   "Properties": {
+    "DefinitionString": "{\"StartAt\":\"Pass\",\"States\":{\"Pass\":{\"Type\":\"Pass\",\"End\":true}}}",
+    "LoggingConfiguration": {
+     "Level": "OFF"
+    },
+    "RoleArn": {
+     "Fn::GetAtt": [
+      "StateMachineWithLoggingOFFRole726E8117",
+      "Arn"
+     ]
+    }
+   },
+   "DependsOn": [
+    "StateMachineWithLoggingOFFRole726E8117"
+   ],
+   "UpdateReplacePolicy": "Delete",
+   "DeletionPolicy": "Delete"
+  }
+ },
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}