v3dv: always store/restore attachment state during meta operations

attachment state is only relevant during render passes, however,
there is a corner case: if we can't resolve an attachment in a
subpass using the hardware, we emit a manual image resolve in the
driver which can trigger a meta operation via blit. In this case,
we pretend we are not in a render pass (since vulkan disallows
blits/resolves in a render pass) but we really want to keep the
attachment state after the meta operation.

Fixes some of the issues we have with CTS 1.3.4 in:
dEQP-VK.pipeline.monolithic.multisample.misc.*

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20331>