Dashboard: Bar chart does not show on hover all values when only 1 option is selected

### What happened? On hover on barchart graphs is showing only one value, even if the option in ToolTip is selected on ALL. (i saw that ToolTip was not available in 10.4, there is also not working for time series)  ### What did you expect to happen? On version 10.4 i was able to see all other values when hovering above a bar, even if only 1 parameter was selected  ### Did this work before? Yes, on version 10.4 ( i do not have the versions between to know when it stopped working) ### How do we reproduce it? 1. Create a barchart graph with more than 1 parameter 2. Select to display only 1 parameter 3. Hover above the bar ### Is the bug inside a dashboard panel? { "datasource": { "type": "grafana-postgresql-datasource", "uid": "fdultp71meccge" }, "fieldConfig": { "defaults": { "custom": { "lineWidth": 1, "fillOpacity": 80, "gradientMode": "scheme", "axisPlacement": "auto", "axisLabel": "", "axisColorMode": "text", "axisBorderShow": false, "scaleDistribution": { "type": "linear" }, "axisCenteredZero": false, "hideFrom": { "tooltip": false, "viz": false, "legend": false }, "thresholdsStyle": { "mode": "off" }, "axisGridShow": false }, "color": { "mode": "thresholds" }, "mappings": [], "thresholds": { "mode": "absolute", "steps": [ { "color": "dark-red", "value": null }, { "color": "dark-yellow", "value": 84.99 }, { "color": "dark-green", "value": 89.99 }, { "color": "dark-orange", …