fix(data-aggregator): remove extra closing brace causing syntax error

- Fixed loadDimensionData function that had duplicate closing brace
- This was preventing review session dimension data from being parsed

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Co-Authored-By: Claude <noreply@anthropic.com>

ccw/src/core/data-aggregator.js

@@ -301,7 +301,6 @@ async function loadDimensionData(reviewDir) {
       // Skip invalid dimension files
     }
   }
-  }
 
   return dimensions;
 }