Graph preview doesn't work after setting Role for lambda

The graph preview is failing to display, as soon as I set the `Role` Property on the Lambda Function.

IAM Role resource

```yml
IAMRoleLambdaRawFile:
Type: AWS::IAM::Role
Properties:
Path: /
RoleName: !Join
- "-"
- [ !Ref "AWS::Region", !Ref "AWS::StackName", "lambda-raw-file-role" ]
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service:
- lambda.amazonaws.com
Action:
- 'sts:AssumeRole'
Policies:
- PolicyName: "root"
PolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: "Allow"
Action:
- 's3:*'
- 's3-object-lambda:*'
- "dynamodb:*"
- "iot:*"
Resource: "*"
```

Lambda Function resource

```yaml
LambdaSetupFileUpload:
Type: AWS::Lambda::Function
Properties:
FunctionName:
Ref: SetupFileUploadLambdaName
Handler: lambda_function.lambda_handler
Runtime: python3.12
Role: !GetAtt IAMRoleLambdaRawFile.Arn
Code:
S3Bucket: init-file-upload
S3Key: Bundle_FileUpload.zip
```

Commenting out or removing the "Role" in lambda function successfully makes a graph.

Same thing happens when adding a "DependsOn", so I'm guessing it's something to do with the connections?

extension version: 0.26.1

VSCode About Me

Version: 1.96.4 (system setup)
Commit: cd4ee3b1c348a13bafd8f9ad8060705f6d4b9cba
Date: 2025-01-16T00:16:19.038Z
Electron: 32.2.6
ElectronBuildId: 10629634
Chromium: 128.0.6613.186
Node.js: 20.18.1
V8: 12.8.374.38-electron.0
OS: Windows_NT x64 10.0.19045

Python 3.8

Python pip package details

Name: cfn-lint
Version: 1.22.5
Summary: Checks CloudFormation templates for practices and behaviour that could potentially be improved
Home-page: https://github.com/aws-cloudformation/cfn-lint
Author: Kevin DeJong
Author-email: kddejong@amazon.com
License: MIT no attribution
Location: /home/netduma/.local/lib/python3.8/site-packages
Requires: aws-sam-translator, jsonpatch, networkx, pyyaml, regex, sympy, typing_extensions
Required-by:

Name: pydot
Version: 3.0.4
Summary: Python interface to Graphviz's Dot
Home-page: https://github.com/pydot/pydot
Author:
Author-email: Ero Carrera , Peter Nowee , Łukasz , "FeRD (Frank Dana)"
License: MIT
Location: /home/netduma/.local/lib/python3.8/site-packages
Requires: pyparsing
Required-by:

Edit:
Updating to python 3.12 hasn't helped.

Reproduce the graph preview failure with the supplied CloudFormation template, first with the Lambda Role and then with DependsOn removed. Trace the extension's graph-preview handling of resource connections and compare the generated graph for the working and failing templates; done means Role and DependsOn no longer prevent a graph from displaying.

Written by the indexing model from the issue text.