Update Coana Guardrail to not require API key for run (#1214)

## Description
Update the Coana Guardrail to no longer require an API key to run. This
allows for forks of public repos such as this one to run successfully.

## Documentation

Does this require changes to the WorkOS Docs? E.g. the [API
Reference](https://workos.com/docs/reference) or code snippets need
updates.

```
[ ] Yes
```

If yes, link a related docs PR and add a docs maintainer as a reviewer.
Their approval is required.

.github/workflows/coana-guardrail.yml

@@ -12,46 +12,49 @@ jobs:
         uses: tj-actions/changed-files@v44
         with:
           separator: ' '
+
       - name: Checkout the ${{github.base_ref}} branch
         uses: actions/checkout@v4
         with:
-          ## checkout the base branch (usually master/main).
-          ref: ${{github.base_ref}}
-          clean: false
+          ref: ${{github.base_ref}} # checkout the base branch (usually master/main).
+
       - name: Use Node.js 20.x
         uses: actions/setup-node@v4
         with:
           node-version: 20.x
+
       - name: Run Coana on the ${{github.base_ref}} branch
         run: |
           npx @coana-tech/cli run . \
-            --api-key ${{ secrets.COANA_API_KEY }} \
+            --guardrail-mode \
+            --api-key ${{ secrets.COANA_API_KEY || 'api-key-unavailable' }} \
             -o /tmp/main-branch \
-            --changed-files \
-            ${{ steps.changed-files.outputs.all_changed_files }} \
+            --changed-files ${{ steps.changed-files.outputs.all_changed_files }} \
             --lightweight-reachability \
-            --disable-report-submission \
-            --repo-url https://github.com/${{github.repository}}
+ 
+      # Reset file permissions changed by Coana CLI.
+      - name: Reset file permissions
+        run: sudo chown -R $USER:$USER .
+
       - name: Checkout the current branch
         uses: actions/checkout@v4
         with:
-          clean: false
+          clean: true
+
       - name: Run Coana on the current branch
         run: |
           npx @coana-tech/cli run . \
-            --api-key ${{ secrets.COANA_API_KEY }} \
+            --guardrail-mode \
+            --api-key ${{ secrets.COANA_API_KEY || 'api-key-unavailable' }} \
             -o /tmp/current-branch \
-            --changed-files \
-            ${{ steps.changed-files.outputs.all_changed_files }} \
+            --changed-files ${{ steps.changed-files.outputs.all_changed_files }} \
             --lightweight-reachability \
-            --disable-report-submission \
-            --repo-url https://github.com/${{github.repository}}
+ 
       - name: Run Report Comparison
         run: |
           npx @coana-tech/cli compare-reports \
-            --api-key ${{ secrets.COANA_API_KEY }} \
-            --no-block \
+            --api-key ${{ secrets.COANA_API_KEY || 'api-key-unavailable' }} \
             /tmp/main-branch/coana-report.json \
             /tmp/current-branch/coana-report.json
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}