fix(flowmeter): Closes: PW-3510 移除流量计采集数据类型中的"电量"选项 (!31) · Merge requests · frontend / zj-gasalert-fe · GitLab

dongjw requested to merge feature/20260413-pw-3346-nbiot-alarm-time-fix into develop Apr 16, 2026

从 FLOWMETER_DATA_TYPES 常量中删除 battery_voltage 字段，使流量计新增/编辑页面不再显示"电量"选项。

Closes: PW-3510 Amp-Thread-ID: https://ampcode.com/threads/T-019d9557-6ff2-7476-b49a-85bd266e22b5 Co-authored-by: Amp amp@ampcode.com