refactor(ui): polish semi mileage workspace

vehicle-data-platform/apps/web/src/v2/pages/StatisticsPage.tsx

@@ -199,7 +199,7 @@ function SourceStrategy({ value, onChange }: { value: MileageSourceOption[]; onC
       title={`当前优先：${primarySource?.label ?? '未配置'}`}
       onClick={() => setOpen((current) => !current)}
     >
-      <span>数据源策略</span><em>{primarySource?.protocol ?? '未配置'} 优先</em><b>{enabled.length}/3</b>
+      <span>数据源</span><em>{primarySource?.protocol ?? '未配置'} 优先</em><b>{enabled.length}/3</b>
     </Button>
     <WorkspaceSideSheet
       className="v2-mileage-source-sidesheet"