Fix is_cdef_enabled in av1_alloc_cdef_buffers()

Make the condition for is_cdef_enabled less strict in
av1_alloc_cdef_buffers(). Use !cm->tiles.single_tile_decoding instead of
!cm->tiles.large_scale because the code in
av1_decode_tg_tiles_and_wrapup() that calls av1_cdef_frame() or
av1_cdef_frame_mt() tests !cm->tiles.single_tile_decoding.

Bug: b:329485898
Bug: b:329810149
Bug: b:329813868
Bug: chromium:327882824
Bug: chromium:327698030
Bug: oss-fuzz:67057
Bug: oss-fuzz:67060
Change-Id: Iaedac01357c275ec7c3e89ad46ec1327be888d83

av1/common/alloccommon.c

@@ -204,7 +204,7 @@ void av1_alloc_cdef_buffers(AV1_COMMON *const cm,
   const int is_num_workers_changed =
       cdef_info->allocated_num_workers != num_workers;
   const int is_cdef_enabled =
-      cm->seq_params->enable_cdef && !cm->tiles.large_scale;
+      cm->seq_params->enable_cdef && !cm->tiles.single_tile_decoding;
 
   // num-bufs=3 represents ping-pong buffers for top linebuf,
   // followed by bottom linebuf.