fix: restore baseline freq in los text

lib/l10n/app_zh.arb

@@ -1725,7 +1725,7 @@
   "losFrequencyLabel": "频率",
   "losFrequencyInfoTooltip": "查看计算详情",
   "losFrequencyDialogTitle": "无线电地平线计算",
-  "losFrequencyDialogDescription": "从 {frequencyMHz} MHz 处的 k={baselineK} 开始，计算调整当前 {frequencyMHz} MHz 频段的 k 因子，该因子定义了弯曲的无线电范围上限。",
+  "losFrequencyDialogDescription": "从 {baselineFreq} MHz 处的 k={baselineK} 开始，计算调整当前 {frequencyMHz} MHz 频段的 k 因子，该因子定义了弯曲的无线电范围上限。",
   "@losFrequencyDialogDescription": {
     "description": "Explain how the calculation uses the baseline frequency and derived k-factor.",
     "placeholders": {
@@ -1743,4 +1743,4 @@
       }
     }
   }
-}
+}