(aws-stepfunctions): Can't add Jsonata strings to toleratedFailurePercentage

### Describe the bug

When trying to create a DistributedMap with a jsonata string passed in for the toleratedFailurePercentage it is not typesafe and I get a validation error saying that it must be a number that prevents me from generating the definition that I want.

I have tried uploading a jsonata string to the definition body in the aws console so I know its allowed and the doc agree.

### Regression Issue

- [ ] Select this option if this issue appears to be a regression.

### Last Known Working CDK Version

_No response_

### Expected Behavior

I would expect that I am allowed to use a jsonata variable string for the distributed map failure threshold as specified in the doc.

### Current Behavior

```
Error: Validation failed with the following errors:
[.../Map] toleratedFailurePercentage must be between 0 and 100
```

### Reproduction Steps

```
const map = DistributedMap.jsonata(this, 'Map', {
stateName: 'My map',
items: ProvideItems.jsonata(...),

// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
toleratedFailurePercentage: '{% $myThreshold %}', <<-- This causes a validation error
})
```

### Possible Solution

_No response_

### Additional Information/Context

_No response_

### CDK CLI Version

^2.178.1

### Framework Version

_No response_

### Node.js Version

v20.18.2

### OS

OSX

### Language

TypeScript

### Language Version

_No response_

### Other information

_No response_

Start at the DistributedMap.jsonata entry point and trace how toleratedFailurePercentage is validated. Reproduce the TypeScript example with a Jsonata string, then verify that Jsonata expressions are accepted while numeric thresholds still receive the documented validation.

Written by the indexing model from the issue text.