Error calling tool update_issue_comment: undefined

# Issue

After what otherwise looks like a successful run, I see this error when its trying to write its results back to the pull request:

```
{
"type": "user",
"message": {
"role": "user",
"content": [
{
"type": "tool_result",
"content": "Error calling tool update_issue_comment: undefined",
"is_error": true,
"tool_use_id": "toolu_bdrk_01U8nrvfSoSyJeuML6aCiAt2"
}
]
},
"session_id": "1a9fa5d5-7fb5-4401-97fe-7cc77adb353c"
}
```

This is my workflow

```
name: Claude Code Review

on:
pull_request:
types: [opened, synchronize] # Runs on new PRs and updates

jobs:
code-review:
runs-on: ubuntu-latest
permissions:
contents: read
pull-requests: write
issues: write
id-token: write
steps:
# Check out the code to allow git diff operations
- name: Checkout code
uses: actions/checkout@v4
with:
fetch-depth: 0 # Fetch full history for accurate diffs

- name: Configure AWS Credentials (OIDC)
uses: aws-actions/configure-aws-credentials@v4
with:
role-to-assume: ${{ secrets.AWS_ROLE_TO_ASSUME }}
aws-region: us-east-2

- name: Generate GitHub App token
id: app-token
uses: actions/create-github-app-token@v2
with:
app-id: ${{ secrets.APP_ID }}
private-key: ${{ secrets.APP_PRIVATE_KEY }}

- name: Run Code Review with Claude
id: code-review
uses: anthropics/claude-code-action@beta
env:
AWS_REGION: us-east-2
ANTHROPIC_BEDROCK_BASE_URL: "https://bedrock-runtime.us-east-2.amazonaws.com"
with:
github_token: "${{ steps.app-token.outputs.token }}"
# Define the review focus areas
direct_prompt: |
Please review this PR. Look at the changes and provide thoughtful feedback on:
- Code quality and best practices
- Potential bugs or issues
- Suggestions for improvements
- Overall architecture and design decisions

Be constructive and specific in your feedback. Give inline comments where applicable.

use_bedrock: "true"
model: "us.anthropic.claude-3-7-sonnet-20250219-v1:0"
```

And the app has read/write to content, issues, and pull requests. I don't have any `allowed_tools` or `not_allowed_tools` set in my workflow config with the intention of just taking the defaults as I've found the documentation to be a bit unreliable.

# Expected Behavior

I'd expect this tool call to work given the permissions that this workflow has.

Any ideas what is wrong?