XWIKI-22348: Underlining of usernames is inconsistent between comment form and displayed comments

* Added underlining to the author of the comment currently getting written.

(cherry picked from commit 07edca81)

xwiki-platform-core/xwiki-platform-flamingo/xwiki-platform-flamingo-skin/xwiki-platform-flamingo-skin-resources/src/main/resources/flamingo/less/general.less

@@ -165,7 +165,7 @@ body.content {
     // UIs where we want to underline outside of content.
     .xdocLastModification, // Under the title, this link is inline so we want to underline it.
     .panel[class*="HelpTipsPanel "], // This panel, unlike other panels, contains mostly text with underline links.
-    .commentauthor // Similarly to the page last modificator, we want to underline comment authors.
+    .commentauthor, #commentform > label // Similarly to the page last modificator, we want to underline comment authors
     {
       & a {
         .inline-link();