GrafanaContext: Exploring a way to get rid of global scope singletons (#52128)

* Context start

* More progress on more generic react context for services

* Update

* Update Page test

* Fixing tests

* Moving to core app

public/app/AppWrapper.tsx

@@ -15,11 +15,12 @@ import { GrafanaApp } from './app';
 import { AppChrome } from './core/components/AppChrome/AppChrome';
 import { AppNotificationList } from './core/components/AppNotifications/AppNotificationList';
 import { NavBar } from './core/components/NavBar/NavBar';
+import { GrafanaContext } from './core/context/GrafanaContext';
 import { I18nProvider } from './core/internationalization';
 import { GrafanaRoute } from './core/navigation/GrafanaRoute';
 import { RouteDescriptor } from './core/navigation/types';
 import { contextSrv } from './core/services/context_srv';
-import { ConfigContext, ThemeProvider } from './core/utils/ConfigProvider';
+import { ThemeProvider } from './core/utils/ConfigProvider';
 import { CommandPalette } from './features/commandPalette/CommandPalette';
 import { LiveConnectionWarning } from './features/live/LiveConnectionWarning';
 
@@ -99,6 +100,7 @@ export class AppWrapper extends React.Component<AppWrapperProps, AppWrapperState
   }
 
   render() {
+    const { app } = this.props;
     const { ready } = this.state;
 
     navigationLogger('AppWrapper', false, 'rendering');
@@ -114,7 +116,7 @@ export class AppWrapper extends React.Component<AppWrapperProps, AppWrapperState
       <Provider store={store}>
         <I18nProvider>
           <ErrorBoundaryAlert style="page">
-            <ConfigContext.Provider value={config}>
+            <GrafanaContext.Provider value={app.context}>
               <ThemeProvider value={config.theme2}>
                 <KBarProvider
                   actions={[]}
@@ -147,7 +149,7 @@ export class AppWrapper extends React.Component<AppWrapperProps, AppWrapperState
                   </ModalsProvider>
                 </KBarProvider>
               </ThemeProvider>
-            </ConfigContext.Provider>
+            </GrafanaContext.Provider>
           </ErrorBoundaryAlert>
         </I18nProvider>
       </Provider>