[SavedObjectsFinder] Replace savedObjects.client.find (#151549)

## Summary

This PR is a part of standardizing the `SavedObjectsFinder` component
across our codebase.
This PR moves the server-side logic from `saved_objects` plugin to
`saved_objects_finder` plugin and removes the deprecated
`savedObjects.client.find` from the `saved_objects_finder` component.
The component in `saved_objects_finder` plugin supports tagging, while
the one in `saved_objects` does not. Ideally, we'd move to using that
component everywhere. I started working on moving to this component in
the follow-up [PR](#151764).


### Checklist

Delete any items that are not applicable to this PR.

- [X] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
~- []
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials~
- [X] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
~- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard
accessibility](https://webaim.org/techniques/keyboard/))~
~- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))~
~- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)~
~- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))~
~- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)~


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

---------

Co-authored-by: kibanamachine <[email protected]>

src/plugins/discover/public/application/main/components/top_nav/open_search_panel.tsx

@@ -57,7 +57,7 @@ export function OpenSearchPanel(props: OpenSearchPanelProps) {
       <EuiFlyoutBody>
         <SavedObjectFinder
           services={{
-            savedObjects: core.savedObjects,
+            http: core.http,
             uiSettings,
             savedObjectsManagement,
             savedObjectsTagging,

src/plugins/saved_objects/kibana.jsonc

@@ -4,7 +4,7 @@
   "owner": "@elastic/kibana-core",
   "plugin": {
     "id": "savedObjects",
-    "server": true,
+    "server": false,
     "browser": true,
     "requiredPlugins": [
       "data",

src/plugins/saved_objects/tsconfig.json

@@ -14,7 +14,6 @@
     "@kbn/i18n-react",
     "@kbn/test-jest-helpers",
     "@kbn/utility-types",
-    "@kbn/config-schema",
     "@kbn/core-saved-objects-server",
   ],
   "exclude": [

src/plugins/saved_objects_finder/common/index.ts

@@ -0,0 +1,11 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export const PER_PAGE_SETTING = 'savedObjects:perPage';
+export const LISTING_LIMIT_SETTING = 'savedObjects:listingLimit';
+export type { SavedObjectCommon, FindQueryHTTP, FindResponseHTTP, FinderAttributes } from './types';

src/plugins/saved_objects_finder/common/types.ts

@@ -0,0 +1,36 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+import { SavedObject } from '@kbn/core-saved-objects-server';
+
+export type SavedObjectCommon<T = unknown> = SavedObject<T>;
+
+export interface FindQueryHTTP {
+  perPage?: number;
+  page?: number;
+  type: string | string[];
+  search?: string;
+  searchFields?: string[];
+  defaultSearchOperator?: 'AND' | 'OR';
+  sortField?: string;
+  sortOrder?: 'asc' | 'desc';
+  fields?: string | string[];
+  hasReference?: string;
+}
+
+export interface FinderAttributes {
+  title?: string;
+  name?: string;
+  type: string;
+}
+
+export interface FindResponseHTTP<T> {
+  saved_objects: Array<SavedObjectCommon<T>>;
+  total: number;
+  page: number;
+  per_page: number;
+}

src/plugins/saved_objects_finder/kibana.jsonc

@@ -4,7 +4,7 @@
   "owner": "@elastic/kibana-data-discovery",
   "plugin": {
     "id": "savedObjectsFinder",
-    "server": false,
+    "server": true,
     "browser": true,
     "requiredBundles": [
       "savedObjects"