chore: flip request_changes_workflow → false (advisory CodeRabbit posture)

Author: ANcpLua

.coderabbit.yaml

@@ -20,7 +20,7 @@ enable_free_tier: false
 inheritance: false
 reviews:
   profile: assertive
-  request_changes_workflow: true
+  request_changes_workflow: false
   high_level_summary: true
   high_level_summary_instructions: 'Write a dense engineering summary: behavior changed,
     risk surface, validation evidence, generated artifacts, and cross-repo implications.
@@ -645,4 +645,4 @@ issue_enrichment:
     - label: good-first-issue
       instructions: Apply only when the issue is small, well-scoped, and low-risk
         for a new contributor or agent.
-    auto_apply_labels: true
+    auto_apply_labels: true