CloudFormation template has wrong value for "Effect" for AuthRole and UnauthRole

### Amplify CLI Version

10.6.1

### What operating system are you using?

MacOS

### Describe the bug

I'm facing the same problem with #6022
I don't know why it was closed.

### Project Identifier

_No response_

### Log output

```
# Put your logs below this line

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### Additional information

_No response_

### Before submitting, please confirm:

- [X] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.
- [X] I have removed any sensitive information from my code snippets and submission.

Start by reading the referenced issue #6022 and locating the generated CloudFormation template for AuthRole and UnauthRole. The payload names no source file or test; completion should verify that the generated template uses the intended Effect value and that the behavior is covered by a regression check.

Written by the indexing model from the issue text.