[Discover] Add deprecation badges to some of old Advanced Settings (#185871)

- Closes https://github.com/elastic/kibana/issues/179899

## Summary

This PR adds deprecation badges to:
 - discover:searchFieldsFromSource
 - doc_table:legacy
 - rollups:enableIndexPatterns

packages/kbn-doc-links/src/get_doc_links.ts

@@ -516,6 +516,7 @@ export const getDocLinks = ({ kibanaBranch, buildFlavor }: GetDocLinkOptions): D
         : `${ELASTICSEARCH_DOCS}index-mgmt.html`,
       kibanaSearchSettings: `${KIBANA_DOCS}advanced-options.html#kibana-search-settings`,
       discoverSettings: `${KIBANA_DOCS}advanced-options.html#kibana-discover-settings`,
+      rollupSettings: `${KIBANA_DOCS}advanced-options.html#kibana-rollups-settings`,
       visualizationSettings: `${KIBANA_DOCS}advanced-options.html#kibana-visualization-settings`,
       timelionSettings: `${KIBANA_DOCS}advanced-options.html#kibana-timelion-settings`,
       savedObjectsApiList: `${KIBANA_DOCS}saved-objects-api.html#saved-objects-api`,

src/plugins/discover/server/ui_settings.ts

@@ -207,6 +207,15 @@ export const getUiSettings: (
       type: METRIC_TYPE.CLICK,
       name: 'discover:useLegacyDataGrid',
     },
+    deprecation: {
+      message: i18n.translate(
+        'discover.advancedSettings.discover.disableDocumentExplorerDeprecation',
+        {
+          defaultMessage: 'This setting is deprecated and will be removed in Kibana 9.0.',
+        }
+      ),
+      docLinksKey: 'discoverSettings',
+    },
   },
   [MODIFY_COLUMNS_ON_SWITCH]: {
     name: i18n.translate('discover.advancedSettings.discover.modifyColumnsOnSwitchTitle', {
@@ -236,6 +245,15 @@ export const getUiSettings: (
     value: false,
     category: ['discover'],
     schema: schema.boolean(),
+    deprecation: {
+      message: i18n.translate(
+        'discover.advancedSettings.discover.readFieldsFromSourceDeprecation',
+        {
+          defaultMessage: 'This setting is deprecated and will be removed in Kibana 9.0.',
+        }
+      ),
+      docLinksKey: 'discoverSettings',
+    },
   },
   [SHOW_FIELD_STATISTICS]: {
     name: i18n.translate('discover.advancedSettings.discover.showFieldStatistics', {

x-pack/plugins/rollup/server/plugin.ts

@@ -90,6 +90,12 @@ export class RollupPlugin implements Plugin<void, void, any, any> {
         category: ['rollups'],
         schema: schema.boolean(),
         requiresPageReload: true,
+        deprecation: {
+          message: i18n.translate('xpack.rollupJobs.rollupDataViewsDeprecation', {
+            defaultMessage: 'This setting is deprecated and will be removed in Kibana 9.0.',
+          }),
+          docLinksKey: 'rollupSettings',
+        },
       },
     });