TimeShift not working

[rkusniri]

Hello

timeshift is not passed to plugin __from __to variables
reproduced : setting chart to last 8 days and making timeshift 1w it will display last day only.
even in query inspector body sent using:
"from": "${__from:date}",
"to": "${__to:date}",
contain original not a timeshift date.

GRAFANA 10.3.1
JSON API 1.3.6

[zoltanbedi]

duplicate of #245