fix: resolve Miri UB in null struct field test, re-enable Miri on PRs#3669

andygrove merged 2 commits intoapache:mainapache/datafusion-comet:mainfrom

andygrove:fix/miri-ub-null-struct-fieldandygrove/datafusion-comet:fix/miri-ub-null-struct-fieldCopy head branch name to clipboard