lib/philips.ts and lib/modernExtend.js are only partially multi-endpoint aware

[mundschenk-at]

As a follow-up to Koenkk/zigbee2mqtt#23652, I think I have discovered why the "naive" converter implementation only partially works. From line 60 onwards, philipsLight is not multi-endpoint aware.

The power_on_behavior expose handling in https://github.com/Koenkk/zigbee-herdsman-converters/blob/master/src/lib/modernExtend.ts#L1008 also does not take endpoints into account. (There might other functions affected.)