fix(merge): three defects my conflict resolution introduced, all caught by the build

The CSS conflict boundary ran through the middle of a rule, so concatenating both
sides swallowed the closing brace of .userStatusEmoji - 27 opening braces against 26
closing ones. Restored.

The JSX was worse. Our block is a ternary: show call participants instead of the
message preview. Moving it into upstream's new RoomListItemContent carried the preview
branch along while upstream's own preview block stayed behind it, leaving a duplicated
preview and an unbalanced </div>. Removed the duplicate.

getInitials stayed behind unused in RoomListItemView after moving to
RoomListItemContent, which the compiler flagged. Removed.

None of this was visible by reading the diff; the build found all three. Both packages
compile now, and the artifact carries the dfn3 model, so the noise suppression from
#0054 came through the merge intact.

packages/shared-components/src/room-list/VirtualizedRoomListView/RoomListItemWrapper/RoomListItemView/RoomListItemContent.tsx

@@ -105,13 +105,6 @@ export const RoomListItemContent = memo(function RoomListItemContent({
                         vm={vm}
                     />
                 )}
-
-                    {item.messagePreview && (
-                        <Text as="div" size="sm" className={styles.ellipsis} title={item.messagePreview}>
-                            {item.messagePreview}
-                        </Text>
-                    )}
-                </div>
                 {!isDragging && (item.showMoreOptionsMenu || item.showNotificationMenu) && (
                     <RoomListItemHoverMenu
                         showMoreOptionsMenu={item.showMoreOptionsMenu}

packages/shared-components/src/room-list/VirtualizedRoomListView/RoomListItemWrapper/RoomListItemView/RoomListItemView.module.css

@@ -106,6 +106,8 @@
 
 .userStatusEmoji {
     padding-left: var(--cpd-space-1-5x);
+}
+
 .callParticipants {
     display: flex;
     flex-direction: column;

packages/shared-components/src/room-list/VirtualizedRoomListView/RoomListItemWrapper/RoomListItemView/RoomListItemView.tsx

@@ -175,14 +175,6 @@ export interface RoomListItemViewProps extends Omit<React.HTMLAttributes<HTMLBut
  * A presentational room list item component.
  * Displays room name, avatar, message preview, and notifications.
  */
-function getInitials(displayName: string): string {
-    return displayName
-        .trim()
-        .split(/\s+/)
-        .slice(0, 2)
-        .map((word) => word.charAt(0).toUpperCase())
-        .join("");
-}
 
 export const RoomListItemView = memo(function RoomListItemView({
     vm,