Merge with upstream (2025-05-26)#128

Merged

wks merged 5 commits intommtk:masterfrom

wks:update/merge-2025-05-20

May 26, 2025

Commits on May 21, 2025

WIP: Fixing compile errors in mmtk/ruby repo
wks
committed

Commits on May 22, 2025

Handle possibly NULL st_table ptr when getting size
wks
committed

Commits on May 26, 2025