Update the path of database import

Author: Samruddhi90

packages/remote-config/package.json

@@ -44,7 +44,7 @@
     "@firebase/logger": "0.4.4",
     "@firebase/util": "1.12.0",
     "@firebase/component": "0.6.17",
-    "@firebase/database": "1.0.14",
+    "@firebase/database": "1.0.19",
     "tslib": "^2.1.0"  
   },
   "license": "Apache-2.0",

packages/remote-config/src/client/realtime_handler.ts

@@ -21,7 +21,7 @@ import { ERROR_FACTORY, ErrorCode } from '../errors';
 import { _FirebaseInstallationsInternal } from '@firebase/installations';
 import { Storage } from '../storage/storage';
 import { calculateBackoffMillis, FirebaseError } from '@firebase/util';
-import { VisibilityMonitor } from '../../../database/src/core/util/VisibilityMonitor';
+import { VisibilityMonitor } from '@firebase/database/dist/src/core/util/VisibilityMonitor';
 
 export class RealtimeHandler {
   constructor(