fix(ui): не подменять неизвестный индекс маршрута нулём

lib/route-optimizer-data.ts

@@ -559,13 +559,13 @@ export function buildLiveOptimizerData(
             prob: curProb,
           }
         : null
-      const diff = (rec?.prob ?? 0) - (cur?.prob ?? 0)
+      const diff = rec && cur ? rec.prob - cur.prob : null
       return {
         community: rule.community,
         communityName: rule.communityName ?? rule.community,
         current: cur,
         recommended: rec,
-        shouldSwitch: diff >= settings.switchThreshold,
+        shouldSwitch: diff !== null && diff >= settings.switchThreshold,
         pinnedBySettings: false,
       }
     })