Loki Query Editor: Make Monaco the default editor (#62247)

* feat(loki-editor): remove slate and make Monaco the default editor

* feat(loki-editor): remove unsupported usages of onBlur

* feat(loki-editor): remove monaco feature flag

* Chore: remove unused import

pkg/services/featuremgmt/registry.go

@@ -94,13 +94,6 @@ var (
 			Description: "Use experimental loki api for WebSocket streaming (early prototype)",
 			State:       FeatureStateAlpha,
 		},
-		{
-			Name:         "lokiMonacoEditor",
-			Description:  "Access to Monaco query editor for Loki",
-			State:        FeatureStateStable,
-			Expression:   "true",
-			FrontendOnly: true,
-		},
 		{
 			Name:        "swaggerUi",
 			Description: "Serves swagger UI",

pkg/services/featuremgmt/toggles_gen.go

@@ -71,10 +71,6 @@ const (
 	// Use experimental loki api for WebSocket streaming (early prototype)
 	FlagLokiDataframeApi = "lokiDataframeApi"
 
-	// FlagLokiMonacoEditor
-	// Access to Monaco query editor for Loki
-	FlagLokiMonacoEditor = "lokiMonacoEditor"
-
 	// FlagSwaggerUi
 	// Serves swagger UI
 	FlagSwaggerUi = "swaggerUi"