DevTools: render category filters in a way that they don't clash.

Source/devtools/front_end/console/consoleView.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 24 matching lines @@
 .console-view-wrapper {
     background-color: #eee;
 }
 
 .console-view-fix-select-all {
     height: 0;
     overflow: hidden;
 }
 
 .console-filters-header {
-    flex: 0 0 23px;
     overflow: hidden;
+    flex: none;
 }
 
 #console-messages {
     flex: 1 1;
     padding: 2px 0;
     overflow-y: auto;
     word-wrap: break-word;
     -webkit-user-select: text;
     border-top: 1px solid rgb(230, 230, 230);
     transform: translateZ(0);
@@ skipping 387 matching lines @@
     font-size: 9px;
 }
 
 .object-info-state-note::before {
     content: "i";
 }
 
 .console-view-object-properties-section:not(.expanded) .object-info-state-note {
     display: none;
 }