add border to comments dropdown

- for windows high contrast mode
- fixes #7458

CHANGELOG.txt

@@ -52,7 +52,7 @@ Changelog
  * Fix: Remove redundant 'clear' button from site root page chooser (Matt Westcott)
  * Fix: Make ModelAdmin IndexView keyboard-navigable (Saptak Sengupta)
  * Fix: Prevent error on refreshing page previews when multiple preview tabs are open (Alex Tomkins)
- * Fix: Multiple accessibility fixes for Windows high contrast mode; Admin fields, Dropdown button, Editor Tabs, Icon visibility, Page Editor field panels, sidebar menu, sidebar hamburger icon, sidebar search, streamfield, checkboxes (Dmitrii Faiazov, Chakita Muttaraju, Onkar Apte, Desai Akshata, LB (Ben Johnston), Amy Chan, Dan Braghis, Thibaud Colas)
+ * Fix: Multiple accessibility fixes for Windows high contrast mode; Admin fields, Dropdown button, Editor Tabs, Icon visibility, Page Editor field panels, sidebar menu, sidebar hamburger icon, sidebar search, streamfield, checkboxes (Dmitrii Faiazov, Chakita Muttaraju, Onkar Apte, Desai Akshata, LB (Ben Johnston), Amy Chan, Dan Braghis, Thibaud Colas, Shariq Jamil)
  * Fix: Menu sidebar hamburger icon on smaller viewports now correctly indicates it is a button to screen readers and can be accessed via keyboard (Amy Chan, Dan Braghis)
  * Fix: `blocks.MultipleChoiceBlock`, `forms.CheckboxSelectMultiple` and `ArrayField` checkboxes will now stack instead of display inline to align with all other checkboxes fields (Seb Brown)
  * Fix: Screen readers can now access login screen field labels (Amy Chan)

CONTRIBUTORS.rst

@@ -548,6 +548,7 @@ Contributors
 * Indresh P
 * Rinish Sam
 * Anirudh V S
+* Shariq Jamil
 
 Translators
 ===========

client/scss/components/_comments-notification-dropdown.scss

@@ -38,6 +38,7 @@
     border-radius: 6px;
     min-width: 260px;
     box-sizing: border-box;
+    border: 1px solid $color-text-base;
 
     &__title {
         font-size: 12px;

docs/releases/2.15.rst

@@ -88,7 +88,7 @@ Bug fixes
  * Remove redundant 'clear' button from site root page chooser (Matt Westcott)
  * Make ModelAdmin IndexView keyboard-navigable (Saptak Sengupta)
  * Prevent error on refreshing page previews when multiple preview tabs are open (Alex Tomkins)
- * Multiple accessibility fixes for Windows high contrast mode; Admin fields, Dropdown button, Editor Tabs, Icon visibility, Page Editor field panels, sidebar menu, sidebar hamburger icon, sidebar search, streamfield, checkboxes (Dmitrii Faiazov, Chakita Muttaraju, Onkar Apte, Desai Akshata, LB (Ben Johnston), Amy Chan, Dan Braghis, Thibaud Colas)
+ * Multiple accessibility fixes for Windows high contrast mode; Admin fields, Dropdown button, Editor Tabs, Icon visibility, Page Editor field panels, sidebar menu, sidebar hamburger icon, sidebar search, streamfield, checkboxes (Dmitrii Faiazov, Chakita Muttaraju, Onkar Apte, Desai Akshata, LB (Ben Johnston), Amy Chan, Dan Braghis, Thibaud Colas, Shariq Jamil)
  * Menu sidebar hamburger icon on smaller viewports now correctly indicates it is a button to screen readers and can be accessed via keyboard (Amy Chan, Dan Braghis)
  * ``blocks.MultipleChoiceBlock``, ``forms.CheckboxSelectMultiple`` and ``ArrayField`` checkboxes will now stack instead of display inline to align with all other checkboxes fields (Seb Brown)
  * Screen readers can now access login screen field labels (Amy Chan)