prometheus: enable new monaco-based query field (#41357)

* prometheus: enable new monaco-based query field

* updated test

* updated tests

* fix e2e tests

* updated comment

packages/grafana-data/src/types/config.ts

@@ -50,7 +50,6 @@ export interface FeatureToggles {
   tempoServiceGraph: boolean;
   tempoSearch: boolean;
   recordedQueries: boolean;
-  prometheusMonaco: boolean;
   newNavigation: boolean;
   fullRangeLogsVolume: boolean;
   autoLoadFullRangeLogsVolume: boolean;

packages/grafana-runtime/src/config.ts

@@ -66,7 +66,6 @@ export class GrafanaBootConfig implements GrafanaConfig {
     tempoServiceGraph: false,
     tempoSearch: false,
     recordedQueries: false,
-    prometheusMonaco: false,
     newNavigation: false,
     fullRangeLogsVolume: false,
     autoLoadFullRangeLogsVolume: false,