drm/xe/guc: Ignore GuC CT errors when wedged

Messaging to GuC may get canceled when device is wedged. Don't
flag this as an error in xe_guc_pc code.

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://lore.kernel.org/r/20250612-wa-14022085890-v4-1-94ba5dcc1e30@intel.com


Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>