fix: add missing JSX key props in segment-filter SelectItem lists

Two SelectItem.map blocks in DeviceFilter were missing the `key` prop,
producing the React reconciler warning and risking incorrect item
reuse across renders. Use `operator.id` (stable, unique within each
list) as the key.

Flagged by react-doctor as react-doctor/jsx-key (Correctness, error).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/modules/ee/contacts/segments/components/segment-filter.tsx

@@ -811,7 +811,9 @@ function DeviceFilter({
 
         <SelectContent>
           {operatorArr.map((operator) => (
-            <SelectItem value={operator.id}>{operator.name}</SelectItem>
+            <SelectItem key={operator.id} value={operator.id}>
+              {operator.name}
+            </SelectItem>
           ))}
         </SelectContent>
       </Select>
@@ -831,7 +833,9 @@ function DeviceFilter({
             { id: "desktop", name: t("workspace.segments.desktop") },
             { id: "phone", name: t("workspace.segments.phone") },
           ].map((operator) => (
-            <SelectItem value={operator.id}>{operator.name}</SelectItem>
+            <SelectItem key={operator.id} value={operator.id}>
+              {operator.name}
+            </SelectItem>
           ))}
         </SelectContent>
       </Select>