AWS::FSx::FileSystem - Storage capacity update based in Input type percentage instead of default value, required to be support in cloudformation -

### Name of the resource

AWS::FSx::FileSystem

### Resource name

_No response_

### Description

AWS::FSx::FileSystem - Storage capacity update based on Input type percentage instead of default support required in cloudformation. As per the reference documentation don't see how can update the Update storage capacity for Input type Desired % increase.

Also should support in cdk python when using fsx.CfnFileSystem construct.

Details can be see when navigating to FSx File systems -> -> Storage capacity -> Update -> Input type (Percentage shows ) -> Desired % increase : 25%

Reference documentation :
[1]https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fsx-filesystem.html#cfn-fsx-filesystem-storagecapacity

### Other Details

_No response_

Start with the AWS::FSx::FileSystem storagecapacity reference documentation and inspect the fsx.CfnFileSystem construct in the CDK Python API. Trace how the Storage capacity update input type is represented, focusing on the Desired % increase option shown in the FSx console. Done means CloudFormation and the CDK Python construct support percentage-based storage-capacity updates.

Written by the indexing model from the issue text.