Serverless changelog (#2237)

Creates serverless release notes for July 22. This was delayed by this
week's emergency serverless release.

---------

Co-authored-by: David Kilfoyle <[email protected]>

Author: benironside

release-notes/elastic-cloud-serverless/index.md

@@ -9,6 +9,43 @@ products:
 # {{serverless-full}} changelog [elastic-cloud-serverless-changelog]
 Review the changes, fixes, and more to {{serverless-full}}.
 
+## July 22, 2025 [serverless-changelog-07222025]
+
+### Features and enhancements [serverless-changelog-07222025-features-enhancements]
+
+* Improves perceived performance for dashboard flyouts [#226052]({{kib-pull}}226052)
+* Renders {{esql}} controls using **OptionsList** UI components [#227334]({{kib-pull}}227334).
+* Adds `MIGRATE` to signed actions [#228566]({{kib-pull}}228566).
+* Excludes metrics data streams [#227842]({{kib-pull}}227842).
+* Adds a package rollback API [#226754]({{kib-pull}}226754).
+* Displays related error count and adds a failure badge [#227413]({{kib-pull}}227413).
+* Adds form row labels to the {{esql}} Editor [#228103]({{kib-pull}}228103).
+* Registers a UI setting for anonymization [#224607]({{kib-pull}}224607).
+* Adds support for span types [#227208]({{kib-pull}}227208).
+* Introduces a public "test now" endpoint [#227760]({{kib-pull}}227760).
+* Enables custom roles by default [#227878]({{kib-pull}}227878).
+* Allows submitting case comments by pressing **⌘+Enter** (or **Ctrl+Enter**) [#228473]({{kib-pull}}228473).
+* Increases the number of supported **Group by** fields in threshold rules from 3 to 5 [#227465]({{kib-pull}}227465).
+
+### Fixes [serverless-changelog-07222025-fixes]
+
+* Fixes an issue in **Lens** where **Partition** charts (for example, Pie) blocked selection of legacy palettes [#228051]({{kib-pull}}228051).
+* Correctly forwards the secondary prefix when the state value is an empty string (`None` option) in **Lens** [#228183]({{kib-pull}}228183).
+* Fixes loading state and improves error handling in the dashboard save modal [#227861]({{kib-pull}}227861).
+* Hides hidden indices from autocomplete when using a lookup index [#227819]({{kib-pull}}227819).
+* Fixes incorrect validation between aggregation expressions [#227989]({{kib-pull}}227989).
+* Fixes product docs installation status [#226919]({{kib-pull}}226919).
+* Resolves issues in the `metric_item` component [#227969]({{kib-pull}}227969).
+* Fixes a bug with the embeddings model dropdown when upgrading with a legacy endpoint [#226878]({{kib-pull}}226878).
+* Fixes filtering by "unmodified" rules in the update table [#227859]({{kib-pull}}227859).
+* Fixes an issue where alert status showed as untracked for newly created schedule rules [#226575]({{kib-pull}}226575).
+* Improves copy in the bulk update modal [#227803]({{kib-pull}}227803).
+* Enables soft-deleting of rule gaps on rule deletion [#227231]({{kib-pull}}227231).
+* Migrates the anonymization in-memory table to `EuiBasicTable` for improved selection control [#222825]({{kib-pull}}222825).
+* Fixes styling issues in flyouts [#228078]({{kib-pull}}228078).
+* Fixes sub-menu behavior in the solution nav when collapsed [#227705]({{kib-pull}}227705).
+
+
 ## July 15, 2025 [serverless-changelog-07152025]
 
 ### Features and enhancements [serverless-changelog-07152025-features-enhancements]