TimeSeries/Barchart: Only show default label for y axis (#44713)

* TimeSeries/Barchart: only show default label for x axis

* Update docs

* Update packages/grafana-ui/src/options/builder/axis.tsx

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

docs/sources/visualizations/time-series/change-axis-display.md

@@ -47,7 +47,7 @@ Set a Y-axis text label.
 
 ![Label example](/static/img/docs/time-series-panel/label-example-7-4.png)
 
-If you have more than one Y-axis, then you can give assign different labels in the Override tab.
+If you have more than one Y-axis, then you can give assign different labels in the Override tab. You can also set the X-axis label using an override.
 
 ## Width
 

packages/grafana-ui/src/options/builder/axis.tsx

@@ -37,8 +37,8 @@ export function addAxisConfig(
         placeholder: 'Optional text',
       },
       showIf: (c) => c.axisPlacement !== AxisPlacement.Hidden,
-      // no matter what the field type is
-      shouldApply: () => true,
+      // Do not apply default settings to time and string fields which are used as x-axis fields in Time series and Bar chart panels
+      shouldApply: (f) => f.type !== FieldType.time && f.type !== FieldType.string,
     })
     .addNumberInput({
       path: 'axisWidth',