(cli): cdk diff does not evaluate conditions

### Describe the bug

We have nested stacks that were imported via `cloudformation_include.CfnInclude`. Even though we have already deployed these stacks, and there have been no changes whatsoever, `cdk diff` reports a fake diff.

```
Stack [REDACTED]
Resources
[~] AWS::CloudFormation::Stack [REDACTED]/[REDACTED].NestedStack/[REDACTED].NestedStackResource [REDACTED]
└─ [~] NestedTemplate
├─ [+] Added: .AWSTemplateFormatVersion
├─ [+] Added: .Description
├─ [+] Added: .Parameters
└─ [~] .Resources:
├─ [+] Added: .[REDACTED]
├─ [+] Added: .[REDACTED]
├─ [+] Added: .[REDACTED]
├─ [+] Added: .[REDACTED]
├─ [~] .[REDACTED]:
│ ├─ [+] Added: .DependsOn
│ ├─ [+] Added: .Metadata
│ └─ [~] .Properties:
│ ├─ [~] .NestedTemplate:
│ │ ├─ [+] Added: .AWSTemplateFormatVersion
│ │ ├─ [+] Added: .Conditions
│ │ ├─ [+] Added: .Description
│ │ ├─ [+] Added: .Parameters
│ │ └─ [+] Added: .Resources
│ ├─ [+] Added: .Parameters
│ ├─ [+] Added: .Tags
│ └─ [+] Added: .TemplateURL
└─ [+] Added: .CDKMetadata
```

### Expected Behavior

There should be no diff reported if nothing has changed.

### Current Behavior

It always reports a diff for no reason.

### Reproduction Steps

Deploy nested stacks using `cloudformation_include.CfnInclude`.
Then run `cdk diff`.

### Possible Solution

_No response_

### Additional Information/Context

_No response_

### CDK CLI Version

2.28.0 (build ba233f0)

### Framework Version

_No response_

### Node.js Version

16.14.2

### OS

Alpine 3.16

### Language

Python

### Language Version

3.10.5

### Other information

_No response_

Start at the CDK CLI `cdk diff` entry point and reproduce the reported nested-stack case using Python and `cloudformation_include.CfnInclude`. Compare the diff after deployment, focusing on whether CloudFormation conditions are evaluated; done means an unchanged deployment produces no diff.

Written by the indexing model from the issue text.