Fix project filter returning too many search results

ee/app/assets/javascripts/security_dashboard/components/shared/filters/project_filter.vue

@@ -92,7 +92,6 @@ export default {
       manual: true,
       variables() {
         return {
-          pageSize: 20,
           fullPath: this.groupFullPath,
           // The IDs have to be in the format "gid://gitlab/Project/${projectId}"
           ids: convertToGraphQLIds(PROJECT_ENTITY_NAME, this.uncachedIds),
@@ -125,6 +124,7 @@ export default {
       },
       variables() {
         return {
+          pageSize: 20,
           fullPath: this.groupFullPath,
           search: this.searchTerm,
         };

ee/app/assets/javascripts/security_dashboard/graphql/queries/instance_projects.query.graphql

-query instanceProjects($search: String) {
+query instanceProjects($search: String, $pageSize: Int) {
   instance: instanceSecurityDashboard {
-    projects(search: $search) {
+    projects(search: $search, first: $pageSize) {
       nodes {
         id
         name