ui: transcode active sessions — 2-row visible window, scroll on 3rd+

Reduced max-height from 57px to 44px (2 × 22px rows) so the container
cleanly shows two entries at a time and scrolls when a third appears.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Plugin/unraid/pages/monitor.php

@@ -1338,7 +1338,7 @@ function vvPollMonitor() {
           });
           sessHtml = `<div style="margin-top:8px;border-top:1px solid #2a2a2a;padding-top:6px;">
             <div style="font-size:10px;color:#555;margin-bottom:4px;">Active transcodes <span style="color:#ff9800;font-weight:600;">${activeSessions.length}</span></div>
-            <div style="max-height:57px;overflow-y:auto;overflow-x:hidden;scrollbar-width:none;-ms-overflow-style:none;">${rowsHtml}</div>
+            <div style="max-height:44px;overflow-y:auto;overflow-x:hidden;scrollbar-width:none;-ms-overflow-style:none;">${rowsHtml}</div>
           </div>`;
         }