Extract asterisk from translation string with format_lazy (page title)

- See #9348
- Relates to #9028

CHANGELOG.txt

@@ -92,7 +92,7 @@ Changelog
  * Fix: Resolve inconsistency in action button positions in InlinePanel (Thibaud Colas)
  * Fix: Use h3 elements with a counter in InlinePanel so screen reader users can navigate by heading (Thibaud Colas)
  * Fix: Ensure that buttons on custom chooser widgets are correctly shown on hover (Thibaud Colas)
- * Fix: Add missing asterisk to title field placeholder (Seremba Patrick)
+ * Fix: Add missing asterisk to title field placeholder (Seremba Patrick, Stefan Hammer)
  * Fix: Avoid creating an extra rich text block when inserting a new block at the end of the content (Matt Westcott)
  * Fix: Removed the extra dot in the Wagtail version shown within the admin settings menu item (Loveth Omokaro)
  * Fix: Fully remove the obsolete `wagtailsearch_editorspick` table that prevents flushing the database (Matt Westcott)

docs/releases/4.1.md

@@ -126,7 +126,7 @@ There are multiple improvements to the documentation theme this release, here ar
  * Resolve inconsistency in action button positions in InlinePanel (Thibaud Colas)
  * Use h3 elements with a counter in InlinePanel so screen reader users can navigate by heading (Thibaud Colas)
  * Ensure that buttons on custom chooser widgets are correctly shown on hover (Thibaud Colas)
- * Add missing asterisk to title field placeholder (Seremba Patrick)
+ * Add missing asterisk to title field placeholder (Seremba Patrick, Stefan Hammer)
  * Avoid creating an extra rich text block when inserting a new block at the end of the content (Matt Westcott)
  * Removed the extra dot in the Wagtail version shown within the admin settings menu item (Loveth Omokaro)
  * Fully remove the obsolete `wagtailsearch_editorspick` table that prevents flushing the database (Matt Westcott)

wagtail/admin/panels.py

@@ -13,6 +13,7 @@ from django.forms.formsets import DELETION_FIELD_NAME, ORDERING_FIELD_NAME
 from django.forms.models import fields_for_model
 from django.utils.functional import cached_property
 from django.utils.safestring import mark_safe
+from django.utils.text import format_lazy
 from django.utils.translation import gettext_lazy
 from modelcluster.models import get_serializable_data_for_fields
 
@@ -1213,7 +1214,13 @@ def set_default_page_edit_handlers(cls):
         FieldPanel(
             "title",
             classname="title",
-            widget=forms.TextInput(attrs={"placeholder": gettext_lazy("Page title*")}),
+            widget=forms.TextInput(
+                attrs={
+                    "placeholder": format_lazy(
+                        "{title}*", title=gettext_lazy("Page title")
+                    )
+                }
+            ),
         ),
     ]