DOC-1020: add language_load option to ui-localization.adoc page. (#3027)

* DOC-1020: add  option to  page that configures whether additional plugin/theme languages are loaded when bundling.

* DOC-1020: updates to language_load options and admons.

* DOC-1020: copy edits and improvements.

* Update modules/ROOT/partials/configuration/language_load.adoc

Co-authored-by: Mitchell Crompton <[email protected]>

* Update changelog.md

* Update modules/ROOT/partials/configuration/language_load.adoc

Co-authored-by: Mitchell Crompton <[email protected]>

* Update modules/ROOT/partials/configuration/language_load.adoc

Co-authored-by: Mitchell Crompton <[email protected]>

---------

Co-authored-by: Mitchell Crompton <[email protected]>

Author: kemister85

changelog.md

@@ -6,6 +6,10 @@ The format is loosely based on [Keep a Changelog](https://keepachangelog.com/en/
 
 ### Unreleased
 
+### 2023-12-20
+
+- DOC-1020: add `language_load` option to `ui-localization.adoc` page that configures whether additional plugin/theme languages are loaded when bundling.
+
 ### 2023-12-19
 
 - DOC-2220: add generation of `latest` and `6` documentation in parallel.

modules/ROOT/pages/ui-localization.adoc

@@ -8,7 +8,4 @@ include::partial$configuration/language.adoc[]
 
 include::partial$configuration/language_url.adoc[]
 
-////
-undocumented
-include::partial$configuration/language_load.adoc[]
-////
+include::partial$configuration/language_load.adoc[]

modules/ROOT/partials/configuration/language_load.adoc

@@ -0,0 +1,29 @@
+[[language_load]]
+== `+language_load+`
+
+This option determines whether additional plugin or theme languages are loaded during {productname} editor initialization. By default, plugins which have support for languages other than English will automatically load the additional language packs.
+
+*Type:* `+boolean+`
+
+*Default value:* `+true+`
+
+* When the `+language_load+` option is set to `+true+`, any available language packs can be loaded and used by {productname} and plugins that support multiple-languages.
+* When set to `+false+`, only explicitly configured language packs will load.
+
+[IMPORTANT]
+Setting `+language_load+` option to `+false+` is not recommended unless loading local language packs.
+
+=== Example: using `+language_load+`
+
+[source,js]
+----
+tinymce.init({
+  selector: 'textarea', // Change this value according to your HTML
+  language_load: true, // Disables the automatic loading of additional plugin and theme language files.
+});
+----
+
+[TIP]
+When bundling, it is advisable for plugins that support multiple languages to load the additional language packs locally, and to set this option to `+false+`. This will ensure that all required languages are available for the editor, and that no additional language packs will be retrieved by the plugins.
+
+You can find and download languages link:{gettiny}/language-packages/[here].