[BUG] KMS Key and IAM Role Resource Icons are switched

### Describe the bug

KMS Key icon and IAM Role icon are switched

### Expected Behavior

Correct icons

### Current Behavior

Incorrect icons

### Reproduction Steps

See below images. Low level diagram with resources has incorrect icon BUT high level diagram with services has correct mapping.

### Possible Solution

_No response_

### Additional Information/Context

_No response_

### PDK version used

^0.26.15

### What languages are you seeing this issue on?

Typescript

### Environment details (OS name and version, etc.)

macOS 26.4

No file, test, or entry point is named in the issue. Start by locating the low-level diagram resource icon mapping for KMS Key and IAM Role, then compare it with the high-level service mapping shown to be correct. Done means the low-level diagram displays the correct icons and the relevant checks pass.

Written by the indexing model from the issue text.