[SYCL] Relax work-group metadata generation and processing in sycl-post-link#7471

steffenlarsen merged 2 commits intointel:syclintel/llvm:syclfrom

steffenlarsen:steffen/post_link_reqd_wg_size_mdsteffenlarsen/llvm:steffen/post_link_reqd_wg_size_mdCopy head branch name to clipboard