fix server member list scrolling

src/chat/components/MemberList.svelte

@@ -28,7 +28,6 @@
   }
 </script>
 
-
 <div class="member-list">
   {#if !chat.isReady}
     <div class="member-list-section-header">
@@ -105,7 +104,7 @@
     {/if}
   {/if}
 </div>
-  </div>
+
 <style>
   .avatar-container {
     position: relative;
@@ -150,24 +149,14 @@
     line-height: 1;
   }
 
-
-  .right-sidebar {
-    width: 240px;
-    background-color: var(--background-secondary);
-    display: flex;
-    flex-direction: column;
-    flex-shrink: 0;
-    border-left: 1px solid rgba(0, 0, 0, 0.2);
-    position: relative;
-    z-index: 100;
-  }
   .member-list {
     padding: 16px 8px;
     display: flex;
     flex-direction: column;
     gap: 2px;
     overflow-y: auto;
-    overflow-y: auto;
+    flex: 1;
+    min-height: 0;
   }
 
   .member-item {
@@ -179,6 +168,7 @@
     cursor: pointer;
     color: var(--interactive-normal);
     transition: all 0.1s;
+    flex-shrink: 0;
   }
 
   .member-item:hover {
@@ -209,6 +199,7 @@
     color: var(--text-muted);
     text-transform: uppercase;
     letter-spacing: 0.02em;
+    flex-shrink: 0;
   }
 
   .sharing-badge {