TSI mixes all variables on unassigned instances

[MateRadz]

When ingesting TSI in a scenario when each deviceId represents different telemetry values, in TSI explorer when clicking on any device the interface shows all telemetry instances not filtered by the deviceId.

Minimal steps to reproduce

ingest TSI with the following sample data:

[{
"deviceId": "testDevice1",
"eventOriginTime": "2021-07-30T21:00:34.754Z",
"x1": 24.270660400390625,
"y1": 997.2078247070312,
"z1": 25.398334503173828
},
{
"deviceId": "testDevice2",
"eventOriginTime": "2021-07-30T21:00:34.754Z",
"x2": 24.270660400390625,
"y2": 997.2078247070312,
"z2": 25.398334503173828
}]

Observe that when selecting "testDevice2" in explorer you will be able to choose x1,y1,z1,x2,y2,z2. When in this scenario you will choose x1. The TSI explorer will say "This time series contains no data."

Expected/desired behavior

When selecting Unassigned Time Series Instance - only its telemetry values should be accessible for graph.