Allow use of available IAM condition keys within "AWS::Events::EventBusPolicy" Conditions

### Name of the resource

AWS::Events::EventBusPolicy

### Resource name

_No response_

### Description

This is a request to allow use of available the IAM condition keys within "AWS::Events::EventBusPolicy" property "Condition" when creating EventBridge resources with CloudFormation.

Currently, AWS::Events::EventBusPolicy "Condition"[1] property is very limited in that it will only allow users to specify the "aws:PrincipalOrgID"[2] key for condition evaluation. We would like to use the condition to check for Organizational Unit ID instead. Checking the EventBridge Docs, several conditional keys/values are supported[3].

References:
[1]https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-events-eventbuspolicy.html#cfn-events-eventbuspolicy-condition

[2]https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-principalorgid

[3]https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-event-bus-perms.html

### Other Details

_No response_

Start by reviewing the AWS::Events::EventBusPolicy Condition documentation and the linked IAM and EventBridge condition-key references. No repository file, test, or implementation entry point is identified in the issue; done would mean the resource accepts the requested supported IAM condition keys, including an Organizational Unit ID condition.

Written by the indexing model from the issue text.