Restore the accessibility role on call views (#29225)

This was mistakenly removed in a370a5c. You can tell it was unintentional because the 'role' variable was just left unused.

src/components/views/voip/CallView.tsx

@@ -58,7 +58,7 @@ const JoinCallView: FC<JoinCallViewProps> = ({ room, resizing, call, skipLobby,
         await Promise.all(calls.map(async (call) => await call.disconnect()));
     }, []);
     return (
-        <div className="mx_CallView">
+        <div className="mx_CallView" role={role}>
             <AppTile
                 app={call.widget}
                 room={room}

test/unit-tests/components/views/voip/CallView-test.tsx

@@ -69,8 +69,8 @@ describe("CallView", () => {
         client.reEmitter.stopReEmitting(room, [RoomStateEvent.Events]);
     });
 
-    const renderView = async (skipLobby = false): Promise<void> => {
-        render(<CallView room={room} resizing={false} waitForCall={false} skipLobby={skipLobby} />);
+    const renderView = async (skipLobby = false, role: string | undefined = undefined): Promise<void> => {
+        render(<CallView room={room} resizing={false} waitForCall={false} skipLobby={skipLobby} role={role} />);
         await act(() => Promise.resolve()); // Let effects settle
     };
 
@@ -96,6 +96,11 @@ describe("CallView", () => {
             WidgetMessagingStore.instance.stopMessaging(widget, room.roomId);
         });
 
+        it("accepts an accessibility role", async () => {
+            await renderView(undefined, "main");
+            screen.getByRole("main");
+        });
+
         it("calls clean on mount", async () => {
             const cleanSpy = jest.spyOn(call, "clean");
             await renderView();