[miio] delay refresh to avoid devices not ready yet (#8838)

[miio] delay refresh to avoid devices not ready yet (#8838)

* [miio] delay refresh to avoid devices not ready yet

Delay refresh after command is send as some devices are not ready yet
with the execution and will report wrong status.
This is confusing to the users.

Related forum topic:
https://community.openhab.org/t/xiaomi-mi-air-purifier-xiaomi-mi-io/34840/300

Signed-off-by: Marcel Verpaalen <marcel@verpaalen.com>
* [miio] remove change from PR