radv: fix binding partial depth/stencil views with dynamic rendering

radv: fix binding partial depth/stencil views with dynamic rendering

With dynamic rendering, it's allowed to begin rendering with depth or
stencil only but still with a depth/stencil format. The test below
checks that unbound part of ds isn't modified, if depth is bound and
stencil not and vice versa.

This fixes a recent CTS
dEQP-VK.dynamic_rendering.primary_cmd_buff.basic.partial_binding_depth_stencil.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25350>
(cherry picked from commit 1ef5feac5ef48515bba2fa22c8a2a4e517739519)