Fix unconnected w_mask_in on cce_inst_ram macro in bp_quad RTL

The fakeram45_256x48 instance in bsg_mem_1rw_sync_width_p48_els_p256
had its w_mask_in port left unconnected, causing ORD-2041 sanity check
failure. Tie w_mask_in to 0 (active-low) to enable whole-word writes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Jaehyun Kim <jhkim@precisioninno.com>

Author: jhkim-pii

flow/designs/src/bp_quad/bsg_chip_block.sv2v.v

@@ -241513,7 +241513,8 @@ module bsg_mem_1rw_sync_width_p48_els_p256
     .wd_in(data_i),
     .rd_out(data_o),
     .ce_in(_0_net_),
-    .we_in(_1_net_)
+    .we_in(_1_net_),
+    .w_mask_in({48{1'b0}})
   );
 
   assign _1_net_ = ~w_i;