ac/nir: only change the image dim from 3d -> 2d array on gfx9

10 jobs for !1291 with radv-navi-fix-3d-textures in 9 minutes and 58 seconds (queued for 50 seconds)
latest detached
Status Job ID Name Coverage
  Containers Build
passed debian #407321

00:00:19

 
  Build+Test
passed meson-clang #407323

00:04:22

passed meson-clover #407327

00:08:18

passed meson-main #407326

00:04:21

passed meson-swr-glvnd #407322

00:04:28

passed meson-vulkan #407328

00:02:25

passed scons-llvm #407330

00:04:56

passed scons-nollvm #407329

00:02:35

passed scons-swr #407324

00:07:53

passed scons-win64 #407325

00:05:41