radv: stop skip emitting CB states when there is no color attachment

radv: stop skip emitting CB states when there is no color attachment

This is actually wrong. For example, if there is a DCC decompress
draw followed by a draw without any color attachments,
CB_COLOR_CONTROL.MODE is still CB_DCC_DECOMPRESS but it should be
CB_DISABLED. For some reasons, this hangs on RDNA3 (VM faults are also
reported through dmesg).

This fixes GPU hangs with Resident Evil 6, Star Wars The Old Republic
and probably more games on RDNA3.

Strictly speaking, I don't think this dynamic state optimization is
worth a try, even for other states, and I think it would be safer to
remove it completely.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9335
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8327
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9878
Fixes: c08082e8615 ("radv: ignore all CB dynamic states when there is no color attachments")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25402>