[Backport 8.15] Update resolve index missing type definition (#2857)

* Update resolve index missing type definition

* Add allow_no_indices

* Fix Markdown syntax in allow_no_indices

* Run make contrib

---------

Co-authored-by: Quentin Pradet <[email protected]>
(cherry picked from commit f24570e)

Co-authored-by: mohamedhamed-ahmed <[email protected]>

Author: github-actions[bot]

output/openapi/elasticsearch-openapi.json

@@ -44,5 +44,17 @@ export interface Request extends RequestBase {
      * @server_default open
      */
     expand_wildcards?: ExpandWildcards
+    /**
+     * If `false`, the request returns an error if it targets a missing or closed index.
+     * @server_default false
+     */
+    ignore_unavailable?: boolean
+    /**
+     * If `false`, the request returns an error if any wildcard expression, index alias, or `_all` value targets only missing or closed indices.
+     * This behavior applies even if the request targets other open indices.
+     * For example, a request targeting `foo*,bar*` returns an error if an index starts with `foo` but no index starts with `bar`.
+     * @server_default true
+     */
+    allow_no_indices?: boolean
   }
 }