Fix style issue on selected and unfocused message that is part of a thread (#5798)

CHANGELOG

@@ -5,6 +5,7 @@ CHANGELOG Roundcube Webmail
 - Fix decoding non-ascii attachment names from TNEF attachments (#5646, #5799)
 - Fix uninitialized string offset in rcube_utils::bin2ascii() and make sure rcube_utils::random_bytes() result has always requested length (#5788)
 - Fix bug where HTML messages with @media styles could moddify style of page body (#5811)
+- Fix style issue on selected and unfocused message that is part of a thread (#5798)
 
 RELEASE 1.3.0
 -------------

skins/larry/mail.css

@@ -279,7 +279,7 @@ table.messagelist.fixedcopy {
 /*	background-color: #fff; */
 }
 
-.messagelist tr.thread.expanded td {
+.messagelist tr.thread.expanded:not(.selected) td {
 	background-color: #ededed;
 }