[Glitch] Fix hovercard not showing in compose column

Port 8544f95ad63bdcf5401dbf121043f1645e725b83 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/styles/mastodon/components.scss

@@ -3083,7 +3083,6 @@ a.account__display-name {
 
     &__pane {
       height: 100%;
-      overflow: hidden;
       display: flex;
       justify-content: flex-end;
       min-width: 285px;