Fix reviewer icons horizontal misalignment in pull request view (#8013)

* Initial plan

* Initial investigation of reviewer icon misalignment issue

Co-authored-by: alexr00 <[email protected]>

* Fix reviewer icons misalignment by adding align-items: center

Co-authored-by: alexr00 <[email protected]>

* Add justify-content: flex-end to align reviewer icons horizontally

Co-authored-by: alexr00 <[email protected]>

* Hide aria alert div to prevent layout space consumption

Co-authored-by: alexr00 <[email protected]>

* revert

* Remove extra css

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: alexr00 <[email protected]>

Author: Copilot

webviews/common/common.css

@@ -238,6 +238,13 @@ body img.avatar {
 	gap: 4px;
 }
 
+.reviewer-icons [role='alert'] {
+	position: absolute;
+	width: 0;
+	height: 0;
+	overflow: hidden;
+}
+
 .push-right {
 	margin-left: auto;
 }