[Orcas][TH5] Set sai_stats_support_mask to 0x884 for Arista-7060X6-64PE-B-O128 and update comments#24729

kewei-arista wants to merge 2 commits intosonic-net:mastersonic-net/sonic-buildimage:masterfrom

kewei-arista:pr-sonic.4kewei-arista/sonic-buildimage:pr-sonic.4Copy head branch name to clipboard