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If the surface window already uses automatic redirection, we can upgrade
to manual redirection and save some blits with common use cases.
This fixes a minor performance regression from a65bb8480a ('Revert
"xwayland/glamor: Avoid implicit redirection with depth 32 parent
windows"') with mutter >= 44.
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1570>