Xcode: Use ad-hoc signing during compiler id for iOS Mac Catalyst

In commit 2785364b7b (iOS: Add support for Mac Catalyst, 2024-07-02,
v3.31.0-rc1~371^2) we forgot to update the conditions to use ad-hoc
signing from commit 89e1113e0c (Xcode: Use ad-hoc signing during
compiler id on macOS, 2022-06-10, v3.22.6~4^2~2).

Fixes: #26376