[Dashboards listing] fix listing limit

Initial page size was passed to the search function instead
of the listing limit causing the max amount received to be
significantly less than the previously implementation.

Saved objects per page is `20` by default and the listing
limit per page is `1000` by default.

Issue:
#4017

Signed-off-by: Kawika Avilla <kavilla414@gmail.com>

Author: kavilla

CHANGELOG.md

@@ -254,6 +254,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Console] Fix dev tool console autocomplete not loading issue ([#3775](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3775))
 - [Console] Fix dev tool console run command with query parameter error ([#3813](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3813))
 - Add clarifying tooltips to header navigation ([#3573](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/3573))
+- [Dashboards Listing] Fix listing limit to utilize `savedObjects:listingLimit` instead of `savedObjects:perPage` ([#4021](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4021))
 
 ### 🚞 Infrastructure
 

src/plugins/dashboard/public/application/legacy_app.js

@@ -150,7 +150,7 @@ export function initDashboardApp(app, deps) {
               type: $scope.dashboardListTypes,
               search: search ? `${search}*` : undefined,
               fields: ['title', 'type', 'description', 'updated_at'],
-              perPage: $scope.initialPageSize,
+              perPage: $scope.listingLimit,
               page: 1,
               searchFields: ['title^3', 'type', 'description'],
               defaultSearchOperator: 'AND',