AzureMonitor: changes to azureMonitorExperimentalUI after feedback (#50455)

* AzureMonitor: tweak experimental-ui after UX discussions.
- move metrics up to resource row
- allow resources field to take an inlineField prop and a labelWidth prop. Eventually once the feature toggle is removed
the inlineField prop will be the only code branch in Field.tsx.

* AzureMonitor: remove devmode req for azureMonitorExperimentalUI flag

* refactor: consolidate logic branch for inline Field

pkg/services/featuremgmt/registry.go

@@ -198,11 +198,10 @@ var (
 			State:       FeatureStateAlpha,
 		},
 		{
-			Name:            "azureMonitorExperimentalUI",
-			Description:     "Use grafana-experimental UI in Azure Monitor",
-			State:           FeatureStateAlpha,
-			RequiresDevMode: true,
-			FrontendOnly:    true,
+			Name:         "azureMonitorExperimentalUI",
+			Description:  "Use grafana-experimental UI in Azure Monitor",
+			State:        FeatureStateAlpha,
+			FrontendOnly: true,
 		},
 		{
 			Name:         "traceToMetrics",