[8.17] [ES `body` removal] `@elastic/observability-ui` (#204873) (#209224)

# Backport

This will backport the following commits from `main` to `8.17`:
- [[ES `body` removal] `@elastic/observability-ui`
(#204873)](https://github.com/elastic/kibana/pull/204873)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Alejandro Fernández
Haro","email":"alejandro.haro@elastic.co"},"sourceCommit":{"committedDate":"2025-02-02T17:10:02Z","message":"[ES
`body` removal] `@elastic/observability-ui`
(#204873)","sha":"e01208030bf1faed9990edf4e965265fca9d2502","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","Team:Observability","backport:prev-major","ci:build-serverless-image","Team:obs-ux-management","elasticsearch-js-9","v9.1.0"],"title":"[ES
`body` removal]
`@elastic/observability-ui`","number":204873,"url":"https://github.com/elastic/kibana/pull/204873","mergeCommit":{"message":"[ES
`body` removal] `@elastic/observability-ui`
(#204873)","sha":"e01208030bf1faed9990edf4e965265fca9d2502"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/204873","number":204873,"mergeCommit":{"message":"[ES
`body` removal] `@elastic/observability-ui`
(#204873)","sha":"e01208030bf1faed9990edf4e965265fca9d2502"}},{"url":"https://github.com/elastic/kibana/pull/209222","number":209222,"branch":"9.0","state":"OPEN"}]}]
BACKPORT-->

Co-authored-by: Alejandro Fernández Haro <alejandro.haro@elastic.co>

x-pack/packages/observability/observability_utils/observability_utils_server/entities/analyze_documents.ts

@@ -66,7 +66,7 @@ export async function analyzeDocuments({
       })
       .then((response) => ({
         hits: response.hits.hits.map((hit) =>
-          mapValues(hit.fields!, (value) => (value.length === 1 ? value[0] : value))
+          mapValues(hit.fields!, (value) => (value?.length === 1 ? value[0] : value))
         ),
         total: response.hits.total,
       })),

x-pack/plugins/observability_solution/observability_shared/public/hooks/use_es_search.ts

@@ -5,7 +5,7 @@
  * 2.0.
  */
 
-import type * as estypes from '@elastic/elasticsearch/lib/api/typesWithBodyKey';
+import type * as estypes from '@elastic/elasticsearch/lib/api/types';
 import { DataPublicPluginStart } from '@kbn/data-plugin/public';
 import type { ESSearchResponse } from '@kbn/es-types';
 import { useKibana } from '@kbn/kibana-react-plugin/public';

x-pack/plugins/observability_solution/observability_shared/public/hooks/use_values_list.ts

@@ -92,46 +92,44 @@ export const useValuesList = ({
   const { data, loading } = useEsSearch(
     createEsParams({
       index: dataViewTitle!,
-      body: {
-        query: {
-          bool: {
-            filter: [
-              ...(filters ?? []),
-              ...(from && to
-                ? [
-                    {
-                      range: {
-                        '@timestamp': {
-                          gte: from,
-                          lte: to,
-                        },
-                      },
-                    },
-                  ]
-                : []),
-            ],
-          },
-        },
-        size: 0,
-        aggs: {
-          values: {
-            terms: {
-              field: sourceField,
-              size: 50,
-              ...(query ? { include: includeClause } : {}),
-            },
-            ...(cardinalityField
-              ? {
-                  aggs: {
-                    count: {
-                      cardinality: {
-                        field: cardinalityField,
+      query: {
+        bool: {
+          filter: [
+            ...(filters ?? []),
+            ...(from && to
+              ? [
+                  {
+                    range: {
+                      '@timestamp': {
+                        gte: from,
+                        lte: to,
                       },
                     },
                   },
-                }
-              : {}),
+                ]
+              : []),
+          ],
+        },
+      },
+      size: 0,
+      aggs: {
+        values: {
+          terms: {
+            field: sourceField,
+            size: 50,
+            ...(query ? { include: includeClause } : {}),
           },
+          ...(cardinalityField
+            ? {
+                aggs: {
+                  count: {
+                    cardinality: {
+                      field: cardinalityField,
+                    },
+                  },
+                },
+              }
+            : {}),
         },
       },
     }),

x-pack/plugins/observability_solution/slo/common/parse_kuery.ts

@@ -5,10 +5,11 @@
  * 2.0.
  */
 
+import type { QueryDslQueryContainer } from '@elastic/elasticsearch/lib/api/types';
 import { kqlQuerySchema, QuerySchema } from '@kbn/slo-schema';
 import { buildEsQuery, fromKueryExpression, toElasticsearchQuery } from '@kbn/es-query';
 
-export function getElasticsearchQueryOrThrow(kuery: QuerySchema = '') {
+export function getElasticsearchQueryOrThrow(kuery: QuerySchema = ''): QueryDslQueryContainer {
   try {
     if (kqlQuerySchema.is(kuery)) {
       return toElasticsearchQuery(fromKueryExpression(kuery));
@@ -23,6 +24,6 @@ export function getElasticsearchQueryOrThrow(kuery: QuerySchema = '') {
       );
     }
   } catch (err) {
-    return [];
+    return [] as QueryDslQueryContainer;
   }
 }