vulkan/wsi/wayland: initialize surface colorspace with PASS_THROUGH_EXT

Starting with sRGB meant we would refcount to -1 if an application
chooses PASS_THROUGH. Instead, just initialize with PASS_THROUGH so the
initial refcount of 0 reflects reality.

Previously, we would segfault if an application chose PASS_THROUGH at
swapchain initialization then switched to a color managed colorspace
later in the runtime, because we would increment refcount from -1 -> 0
and this would result in not creating a new color managed surface.

Fixes: 789507c99c ("vulkan/wsi: implement the Wayland color management protocol")
Signed-off-by: llyyr <llyyr.public@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34353>

src/vulkan/wsi/wsi_common_wayland.c

@@ -2315,7 +2315,7 @@ wsi_CreateWaylandSurfaceKHR(VkInstance _instance,
    surface->surface = pCreateInfo->surface;
 
    wsi_wl_surface->instance = instance;
-   wsi_wl_surface->color.colorspace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
+   wsi_wl_surface->color.colorspace = VK_COLOR_SPACE_PASS_THROUGH_EXT;
 
    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);