iris: Avoid FCV_CCS_E for shader image accesses

iris: Avoid FCV_CCS_E for shader image accesses

The FCV feature is documented to occur on regular render writes. Images
are written to with the DC data port however.

By using plain CCS_E for image writes, we can avoid the COMPRESSED_CLEAR
aux state in more cases. Doing this can avoid full resolves or partial
resolves for future accesses.

Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23220>