Feat(web-twig): Deprecate icon for danger color in Alert component

  * the `warning` icon for the `danger` color is marked as deprecated
  * the `danger` icon for the `danger` color will be used as default in the next major version

refs #DS-1156

packages/web-twig/src/Resources/components/Alert/Alert.twig

@@ -19,10 +19,17 @@
 {% elseif _color == 'warning' %}
   {%- set _iconNameByColor = 'warning' -%}
 {% elseif _color == 'danger' %}
+  {# @TODO: set the value to the `danger` in https://jira.almacareer.tech/browse/DS-1177 #}
   {%- set _iconNameByColor = 'warning' -%}
 {% endif %}
 {%- set _iconNameValue = _iconName | default(_iconNameByColor) -%}
 
+{# Deprecations #}
+{% if _color == 'danger' %}
+    {% deprecated 'Alert: The "warning" icon for the "danger" color is deprecated. Make sure you have the "danger" icon between your assets.
+    Fallback to the "warning" icon will be removed in favor of the "danger" icon in the next major version.' %}
+{% endif %}
+
 <{{ _elementType }} {{ mainProps(props) }} {{ styleProp(_styleProps) }} {{ classProp(_classNames) }} role="alert">
   <Icon name="{{ _iconNameValue }}" />
   <div>

packages/web-twig/src/Resources/components/Alert/README.md

@@ -31,12 +31,16 @@ Without lexer:
 
 | Color name    | Icon name     |
 | ------------- | ------------- |
-| `danger`      | `warning`     |
+| `danger`      | `warning`\*   |
 | `default`     | `info`        |
 | `informative` | `info`        |
 | `success`     | `check-plain` |
 | `warning`     | `warning`     |
 
+(\*) The `warning` icon for the `danger` color has been marked as [deprecated].
+Please make sure you have the `danger` icon in your project between your assets.
+The `warning` icon for the `danger` color will be removed in favor of the `danger` icon in the next major version.
+
 ## API
 
 | Name          | Type                                         | Default   | Required | Description                |
@@ -55,6 +59,7 @@ If you need more control over the styling of a component, you can use [style pro
 and [escape hatches][readme-escape-hatches].
 
 [alert]: https://github.com/lmc-eu/spirit-design-system/tree/main/packages/web/src/scss/components/Alert
+[deprecated]: https://github.com/lmc-eu/spirit-design-system/tree/main/packages/web-twig/README.md#deprecations
 [dictionary-color]: https://github.com/lmc-eu/spirit-design-system/tree/main/docs/DICTIONARIES.md#color
 [icon-package]: https://github.com/lmc-eu/spirit-design-system/tree/main/packages/icons
 [readme-additional-attributes]: https://github.com/lmc-eu/spirit-design-system/blob/main/packages/web-twig/README.md#additional-attributes