fix: Prevent race condition in unviewed validations count update

- Added a guard to ensure the unviewed count is only updated if the current project matches the reference, preventing potential race conditions during state updates.

apps/ui/src/components/layout/sidebar/hooks/use-unviewed-validations.ts

@@ -31,9 +31,12 @@ export function useUnviewedValidations(currentProject: Project | null) {
             const hoursSince = (Date.now() - new Date(v.validatedAt).getTime()) / (1000 * 60 * 60);
             return hoursSince <= 24;
           });
+          // Only update count if we're still on the same project (guard against race condition)
+          if (projectPathRef.current === projectPath) {
             setCount(unviewed.length);
           }
         }
+      }
     } catch (err) {
       console.error('[useUnviewedValidations] Failed to load count:', err);
     }