Microsoft.App/containerApps@2022-10-01: JSON string not understood

### Resource Type

Microsoft.App/containerApps

### Api Version

2022-10-01

### Issue Type

Inaccurate property type(s)

### Other Notes

See https://learn.microsoft.com/en-us/azure/templates/microsoft.app/2022-10-01/containerapps?pivots=deployment-language-bicep.

Property CPU:

```
resources: {
cpu: json('decimal-as-string')
memory: 'string'
}
```

CPU can be decimal or string but when we use decimal-as-string in VS Code, it complains with warning:

> The property "cpu" expected a value of type "int | null" but the provided value is of type "'0.25'".

The resource provider actually accepts it.

### Bicep Repro

_No response_

### Confirm

- [X] I have read the troubleshooting guide and looked for duplicates.

Search the type definition for Microsoft.App/containerApps at API version 2022-10-01 and inspect the CPU property declaration. Confirm the accepted resource-provider values against the linked Azure template documentation, then update the definition and verify that the VS Code warning no longer rejects a decimal-as-string value.

Written by the indexing model from the issue text.